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. 2026 Oct 5;21(10):e0359838. doi: 10.1371/journal.pone.0359838

Knowledge, attitudes, and prevention practices regarding human papillomavirus among health and social science female students in Northwest Ethiopia: A comparative cross-sectional study

Birhanemaskal Malkamu 1,*, Abiyu Ayalew 1, Addisu Melake 2, Alemie Fentie 1, Ayenew Assefa 1, Ayenew Berhan 1, Birhanu Getie 1, Birhanu Malede 1, Biruk Legese 1, Dagnaw Mersha Tegegne 3, Dejen Gedamu Damtie 4, Dessie Tegegne 1, Eninur Dejen 1, Fisseha Nigussie Dagnew 5, Gebrehiwot Berie Mekonnen 6, Getu Abeje 1, Habtamu Demlash 4, Kindie Mitiku 4, Rahel Mulatie Anteneh 7, Samuel Berihun Dagnew 5, Shewaneh Damtie 1, Tadese Sisay 1, Teklehaimanot Kiros 1, Temesgen Lingerh Endalew 8, Tigabu Eskeziya Zerihun 5, Mulat Erkihun 1, Wondimnew Desalegn Addis 4, Yirgalem Abere 9, Getaneh Atikilt Yemata 4, Mahider Shimelis Feyisa 10
Editor: Mengistu Hailemariam Zenebe11
PMCID: PMC13637910  PMID: 42832555

Abstract

Background

University students are vital for Human Papilloma Virus (HPV) prevention, yet comparative data between academic disciplines remain limited. This study compared HPV knowledge, attitudes, and practices (KAP) among female health and Social Science students at Debre Tabor University.

Objective

To compare HPV knowledge, attitudes, and prevention practices (KAP) among female Health and Social Science students and identify sociodemographic predictors of these outcomes.

Methods

Design: Institutional-Based, comparative cross-sectional study. Setting: Debre Tabor University, Northwest Ethiopia, conducted from June to July 2025.

Main outcome measures

HPV knowledge (good vs. poor), attitudes (good vs. poor), and vaccination practices (good vs. poor). Multivariable logistic regression identified independent predictors of poor outcomes.

Results

Health science students (HSS) reported higher awareness (83.6% vs. 56.7%) and more positive attitudes (57.3% vs. 37.6%) than Social Science students (SSS). However, both groups exhibited poor knowledge: 61.2% of HSS and 80.9% of SSS scored <50% on knowledge questions, and critically low vaccination rates (HSS: 18.2%; SSS: 15.2%). For HSS, lack of prior awareness was the strongest predictor of poor practice (AOR = 7.61, 95% CI = 1.65–35.12). For SSS, second-year students had 3.39 times higher odds of poor practice compared to seniors (AOR = 3.39; 95% CI: 1.04–10.99). SSS predominantly relied on social media (45.0%), while HSS used academic sources (67.5%).

Conclusion

A profound knowledge-practice gap exists regardless of the field of study. High reliance on social media among SSS and low practice among mid-level students suggest that university-based interventions could potentially contribute to national efforts, though achieving population-level targets requires multi-sectoral strategies..

Introduction

Human Papilloma virus (HPV) is a highly Prevalent viral infection that poses a significant public health threat worldwide, primarily due to its strong association with cervical cancer and other anogenital and oropharyngeal cancers. Globally, cervical cancer remains a major cause of morbidity and mortality among women, particularly in developing countries where the burden of disease is highest [1,2]. In Ethiopia, while national immunization programs have expanded, the burden of cervical cancer remains high, necessitating a deeper look at the ‘last mile’ of prevention-the transition from awareness to clinical practice among highly educated cohorts. The World Health Organization (WHO) has identified HPV as the leading cause of this preventable cancer, and despite the availability of safe and effective HPV vaccines, the global burden remains substantial, highlighting the need for improved prevention strategies [3,4].

Prevention of HPV- related diseases relies on a multifaceted approach that includes comprehensive health education, vaccination, and regular screening. Research has consistently shown that a high level of knowledge and a positive attitude toward HPV and its vaccination are critical precursors to vaccination uptake [5,6]. However, significant disparities exist in awareness and prevention practices, often influenced by socio-demographic factors such as age, residence, marital status, and educational background [7,8]. The academic setting, particularly among young women, is a crucial environment as it offers a unique opportunity to provide directed education and promote preventative behaviors [9]. This study was guided by a comparative empirical framework, focusing on measurable differences in KAP between academic disciplines without imposing a specific behavioral theory. In Ethiopia, a developing country with a high burden of cervical cancer, the implementation of HPV prevention programs faces unique challenges. Recent regional studies have documented general HPV awareness among Ethiopian students [10–12]; however, these findings often treat the student population as a monolithic group. This oversight is significant because it fails to account for the divergent information sources and professional expectations between students in health-related versus non-health-related disciplines. Understanding these factors is essential for designing effective, evidence-based public health interventions.

This study aimed to address this critical evidence gap by providing a, comparative analysis of HPV knowledge, attitudes, and practices among female students at Debre Tabor University. By specifically contrasting Health Science Students (HSS)-who have curriculum-based exposure-with Social Science Students (SSS), who rely predominantly on informal information sources. We hypothesized that Health Science students would demonstrate higher knowledge and more favorable attitudes due to curriculum‑based exposure, but that vaccination uptake would remain low in both groups due to structural barriers. This research identifies the specific points where knowledge fails to translate into practice. Our findings provide the evidence-based rationale needed to transition from generalized public health messaging to discipline-specific institutional strategies, providing baseline data that may inform institutional components of broader national strategies

Materials and methods

Study design, area, and period

This institutional-based, comparative cross-sectional study was conducted at Debre Tabor University (DTU) from June to July 2025. DTU is located in Debre Tabor, the capital city of the South Gondar zone in Amhara regional state, approximately 667 kilometers southwest of Addis Ababa, Ethiopia. The university, established in 2008, comprises five colleges, one faculty, and two schools. The study specifically targeted students from two of these colleges: the College of Health Sciences and the College of Social Sciences and Humanities. This setting was selected to allow for a direct comparison of HPV knowledge, attitudes, and practices between students with different academic backgrounds.

This study is reported in accordance with the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement.

Patient and public involvement (PPI) Patients and/or the public were not involved in the design, conduct, reporting, or dissemination plans of this research.

Study population and sampling

The source population for this study included all female students registered at Debre Tabor University in 2025, while the study population specifically consisted of eligible female students from the College of Health Sciences (HSS) and the College of Social Sciences and Humanities (SSS). A non-probability quota-based convenience sampling approach was employed due to logistical constraints, including the absence of a complete, real-time sampling frame and the restricted data collection window from June to July 2025. Initially, the two colleges were purposively selected to enable a comparative analysis between health-focused and non-health-focused curricula. The required sample size was determined using a single population proportion formula: n = Zα/22 p*(1-p)/d2.

A 95% confidence level (Za/2 = 1.96), a 5% margin of error (d = 0.05), and a proportion (p) of 72.7%, representing the prevalence of adequate HPV awareness in a similar university population from a previous study at the University of Gondar and Bahr Dar University, were used [13]. The initial calculated sample size was 305. To account for a 10% non-response rate, an additional 30 students were included, bringing the total sample size to 335 female health science students and 335 Social Science students, for a total of 670 participants. A 100% response rate was achieved as all distributed questionnaires were completed and returned during the supervised data collection sessions

Data collection

A structured, self-administered questionnaire was used to collect data. The tool was adapted from similar studies and modified after an extensive literature review [13,14]. The questionnaire was designed to capture attitude, knowledge, and practice framed as measuring perceived susceptibility, perceived benefit and actual practice. Its content validity was ensured through an expert review process involving faculty members from the College of Health Sciences. The questionnaire was initially prepared in English, translated into the local language (Amharic), and then back-translated into English by a different translator to ensure consistency.

The questionnaire consisted of three main sections:

  1. Socio-demographic data: Age, marital status, religion, residence, academic year, and field of study.

  2. HPV Awareness: Questions to assess if students had heard about HPV and their sources of information.

  3. Knowledge, Attitudes, and Practices (KAP): Specific questions to measure participants’ knowledge, attitudes, and prevention practices regarding HPV and its vaccination.

A total of 670 eligible female students (335 from the College of Health Sciences and 335 from the College of Social Sciences and Humanities) were included in the study, representing 100% of the calculated target sample size. To ensure the study reached its planned statistical power, recruitment and data collection continued within each academic cohort until the required quota of 335 completed and valid questionnaires per group was achieved.

Operational definitions

Awareness: In this study, awareness is defined as having previously heard of HPV (measured as a binary ‘Yes/No’ response).

Knowledge: Participants were categorized as having ‘good knowledge’ if they correctly answered greater than or equal to 50% of the knowledge-related questions. Scores less than 50% were categorized as ‘poor knowledge’. The 50% cutoff was chosen based on modified Bloom’s criteria, which categorizes scores below 50% as poor, and is consistent with prior Ethiopian HPV studies, such as Mekonnen et al 2024 [13]

Attitude: Participants’ attitudes were measured using a composite score. Scores were classified as poor attitude for less than 50%, and good attitude equal to or more than 50% of the total attitude score.

Practice: Good practice was defined as having received at least one dose of the HPV vaccine. Participants who had received no doses at all were categorized as having poor practice.“

Data quality control

To ensure data quality, the questionnaire was pre-tested on 10% of the sample (67) in a different population of engineering students, a population with similar demographics but a different academic background, to ensure clarity and reliability before the main data collection began. The pre-test data were not included in the final analysis. Based on this pre-test, necessary adjustments were made to the tool to improve clarity and validity.

To assess the internal consistency of the questionnaire, Cronbach’s alpha coefficients were calculated for the knowledge and attitude domains separately for Health Science and Social Science student cohorts. The knowledge domain (14 items) demonstrated excellent internal consistency in both groups (Health Science: α = 0.930; Social Science: α = 0.930). The attitude domain (5 items) showed acceptable reliability in both groups (Health Science: α = 0.762; Social Science: α = 0.762). Corrected item-total correlations for all items exceeded 0.30, confirming that each item contributed meaningfully to its respective scale. These results indicate that the questionnaire reliably measured the intended constructs across both student populations.

During the main data collection phase, rigorous quality control was maintained through two principal measures. To assess the consistency of data abstraction and recording, inter-rater reliability (IRR) checks were conducted on the data abstraction process, by two separate, trained data collectors on 5% of the collected questionnaires. The agreement was measured using the Kappa statistic, which yielded a result of kappa = 0.65, indicating substantial agreement. Data Entry Accuracy: All collected data were subjected to double data entry by two independent data clerks. The entries were subsequently compared using validation procedures in SPSS to identify and correct any inconsistencies, ensured an error rate of less than 1%. Furthermore, the principal investigator reviewed all completed questionnaires daily for completeness and consistency. Study participants were clearly informed about the study’s purpose to foster honest responses.

In addition, STROBE (Strengthening the Reporting of Observational Studies in Epidemiology) guidelines were followed throughout the study.

Ethical approval and consent to participate

Ethical approval and clearance for the study were obtained from the Research and Community Service Corporate Directorate Director, College of Health Science, Debre Tabor University, protocol number 017/2024, at July 20, 2024. The study was conducted in accordance with the Declaration of Helsinki. Informed consent was secured from each respondent after a thorough explanation of the study’s purpose and their rights, including the option to withdraw at any time. All data obtained were kept confidential and private, with no personal identifiers recorded. The privacy and rights of the participants were respected throughout the study.

Data processing and analysis

All collected data were checked for completeness, coded, and entered into SPSS statistical software version 26.0. Descriptive statistics were used to summarize socio-demographic characteristics, awareness, and KAP levels. For inferential analysis, both bi-variable and multivariable logistic regression models were used to identify factors associated with poor HPV knowledge, attitude, and practice. Variables with a < 0.25 in the bivariable analysis were considered candidates for the multivariable logistic regression model to control for potential confounders. A backward stepwise elimination method was used to identify independent predictors of knowledge, attitude, and practice.

Multicollinearity was assessed using the Variance Inflation Factor (VIF), and the results confirmed the absence of significant collinearity (Max VIF = 1.836). The goodness-of-fit of the multivariable models was evaluated using the Hosmer–Lemeshow test, with a p-value = 0.34 ( > 0.05) indicating an adequate fit. In

The final multivariable model, an Adjusted Odds Ratio (AOR) with a 95% Confidence Interval (CI) was used to measure the strength of association, and a p-value <0.05 was considered statistically significant.

Results

Comparative descriptive results

Socio-demographic characteristics.

A total of 670 female students participated, with equal representation from Health Science (n = 335) and Social Science (n = 335) streams. The majority of participants in both groups were aged 20–23 years (81.5% and 74.3% respectively) and predominantly from rural residences (56.9% total). (Table 1).

Table 1. Socio-demographic characteristics of Female Health Science and Social Science Students at Debre Tabor University.
Variable Category Health Science (n = 335) Social Science (n = 335) Total (N = 670)
Age 20–23 273 (81.5%) 249 (74.3%) 522 (77.9%)
24–26 62 (18.5%) 86 (25.7%) 148 (22.1%)
Religion Orthodox 286 (85.4%) 248 (74.0%) 534 (79.7%)
Protestant 39 (11.6%) 44 (13.1%) 83 (12.4%)
Muslim 10 (3.0%) 18 (5.4%) 28 (4.2%)
Catholic 0 (0.0%) 25 (7.5%) 25 (3.7%)
Residence Urban 151 (45.1%) 138 (41.2%) 289 (43.1%)
Rural 184 (54.9%) 197 (58.9%) 381 (56.9%)
Marital Status Single 322 (96.1%) 304 (90.7%) 626 (93.4%)
Married 9 (2.7%) 26 (7.8%) 35 (5.2%)
Divorced 4 (1.2%) 5 (1.5%) 9 (1.3%)

HPV awareness and sources of information among Female Health Science and Social Science Students

A total of 670 participants were surveyed regarding their awareness of HPV. The majority of students (n = 280, 83.6%) among Health Science Students, reported that they had heard of HPV, while a minority (n = 55, 16.4%) had not (Table 2). Among Social Science Students, social media (n = 86, 45%) is the highest source of information.

Table 2. HPV awareness and sources of information among Female Health Science and Social Science Students (N = 670).

Variable Category Health Science (n = 335) Social Science (n = 335)
Heard about HPV Yes 280 (83.6%) 190 (56.7%)
No 55 (16.4%) 145 (43.3%)
Source of information* Academic 189 (67.5%) 27 (14.2%)
Health center 48 (17.1%) 38 (20.0%)
Social media 33 (11.8%) 85 (44.7%)
Friends 6(2.1%) 27 (14.2%)
Family 4 (1.4%) 13 (6.8%)

Note: The percentages for ‘Source of Information’ are calculated based on the subset of participants who reported prior awareness of HPV (n = 280 for Health Science and n = 190 for Social Science). This explains the variation in denominators compared to the total sample size (N = 670).

HPV knowledge, attitude, and practice level of Female Health Science and Social Science Students

The overall knowledge, Attitude, and Practice level regarding HPV among the participating Female Health Science and Social Science Students was assessed (Table 3).

Table 3. Distribution of HPV knowledge, attitude, and vaccination practice level among Female Health Science Students at Debre Tabor University.

Variable Category Health Science (n = 335) Social Science (n = 335)
Knowledge level Good Knowledge 130 (38.8%) 64 (19.1%)
Poor Knowledge 205 (61.2%) 271 (80.9%)
Attitude level Good Attitude 192 (57.3%) 126 (37.6%)
Poor Attitude 143 (42.7%) 209 (62.4%)
Vaccination Practice level Good Practice 61 (18.2%) 51 (15.2%)
Poor Practice 274 (81.8%) 284 (84.8%)

Pearson’s chi-square tests were performed to formally compare Health Science and Social Science students across key outcomes. Health Science students had significantly higher HPV knowledge (38.8% vs. 19.1% good knowledge; χ² = 31.61, df = 1, p < 0.001) and more favorable attitudes towards HPV vaccination (57.3% vs. 37.6% good attitude; χ² = 26.07, df = 1, p < 0.001) compared to Social Science students. However, vaccination practice did not differ significantly between the two groups (18.2% vs. 15.2% vaccinated; χ² = 1.07, df = 1, p = 0.300).

Factors associated with HPV knowledge, attitude and practice of Female Health Science Students

To identify factors associated with HPV knowledge, attitude, and practice, logistic regression analyses were performed exclusively on the data collected from the Health Science student group (N = 335). This approach was taken to investigate the determinants of these outcomes with a population directly relevant to health-related interventions and education

Factors associated with HPV knowledge and practice of Female Health Science Students

Multivariable logistic regression was performed to identify independent predictors of poor HPV knowledge and practice among Health Science students. After adjusting for potential confounders, including age, residence, and academic department, prior awareness of HPV emerged as the most significant determinant for both knowledge and behavior (Table 4).

Table 4. Multivariable logistic regression of factors associated with poor HPV knowledge and poor practice among Female Health Science Students (n = 335).

Variable Category Poor Knowledge AOR (95% CI) p-value Poor Practice AOR (95% CI) p-value
Heard about HPV No 6.96 (2.29–21.15) 0.001* 7.61 (1.65–35.12) 0.01*
Yes (Ref) 1 1
Age 20–23 0.55 (0.27–1.10) 0.09 0.94 (0.40–2.20) 0.89
24–26 (Ref) 1 1
Residence Urban 1.35 (0.82–2.23) 0.23 0.87 (0.47–1.59) 0.64
Rural (Ref) 1 1
Academic Year 2nd year 3.21 (0.99–10.32) 0.05* 1.52 (0.41–5.62) 0.53
3rd year 0.83 (0.28–2.45) 0.74 2.61 (0.74–9.20) 0.13
4th year 2.28 (0.79–6.57) 0.13 1.42 (0.45–4.53) 0.55
5th year (Ref) 1 1
Department Anesthesia 0.77 (0.20–2.97) 0.70 0.48 (0.08–2.95) 0.43
Medical Lab 0.77 (0.21–2.83) 0.69 1.01 (0.14–6.91) 0.98
Pharmacy 0.95 (0.30–3.02) 0.93 0.72 (0.13–3.86) 0.70
Comp. Nursing 0.86 (0.24–3.05) 0.81 0.22 (0.04–1.20) 0.08
Ped. Nursing 0.82 (0.21–3.21) 0.78 0.64 (0.09–4.47) 0.65
Medicine 0.63 (0.20–1.98) 0.43 0.50 (0.10–2.51) 0.40
Midwifery 0.66 (0.20–2.13) 0.48 1.32 (0.22–7.79) 0.76
Psych. Nursing (Ref) 1 1

* Denotes statistical significance at P < 0.05.

It is worth noting that certain predictors, particularly ‘prior awareness of HPV’ (Heard about HPV), demonstrated wide 95% confidence intervals (AOR = 7.61, 95% CI: 1.65–35.12). This may indicate a lower level of precision in the point estimate for this variable, likely due to small sample sizes within specific subgroups; therefore, these associations should be interpreted with caution.

The multivariable logistic regression models used to identify predictors of HPV knowledge and practice among Health Science students were assessed for statistical validity. The model for HPV knowledge demonstrated a good fit to the data (Hosmer–Lemeshow test: X2 = 24.52, p = 0.336), while the model for prevention practice also showed an adequate fit (Hosmer–Lemeshow test: X2 = 14.66, P = 0.066). Furthermore, no significant multicollinearity was detected among the independent variables, with a maximum Variance Inflation Factor (VIF) of 1.836. These diagnostics confirm that the models are reliable for identifying the independent factors associated with these outcomes.

Associated factors with HPV attitude of Female Health Science Students

As illustrated in Table 5, the bivariable logistic regression analysis revealed that none of the investigated socio-demographic factors or prior awareness levels were significantly associated with the attitude of Health Science students toward HPV prevention (P > 0.05). Regarding students’ academic year: When using the second-year students as a reference group, the bivariable logistic regression showed that higher academic years tended to have higher odds of a good attitude, particularly among fifth-year students (COR = 2.46, 95 CI: 0.97–6.23); however, this association did not reach statistical significance (P = 0.06).

Table 5. Binary logistic regression outcome of HPV Attitude of Female Health Science Students.

Variable Category Level of Attitude COR (95%

CI)
p

value
Good attitude Poor attitude
Heard about HPV Yes 36 19 0.66 (0.36-1.21) 0.18
No (Ref) 156 124 1
Age 20-23 160 113 0.75 (0.43-1.31) 0.32
24-26(Ref) 32 30 1
Residence Urban 84 67 1.13 (0.73-1.75) 0.57
Rural (Ref) 108 76 1
Academic Year 2nd Year 75 44 1 –
3rd Year 55 53 1.64 (0.97-2.79) 0.07
4th Year 53 33 1.06 (0.60-1.88) 0.84
5th Year (Ref) 9 13 2.46 (0.97-6.23) 0.06
Department Anesthesia 12 12 0.91 (0.28-2.93) 0.87
Medical laboratory 20 12 0.54 (0.18-1.66) 0.29
Pharmacy 35 21 0.54 (0.19-1.50) 0.24
Comprehensive nursing 24 16 0.61 (0.21-1.76) 0.36
Pediatric nursing 17 9 0.48 (0.15-1.56) 0.22
Medicine 40 43 0.97 (0.37-2.55) 0.96
Midwifery 34 19 0.51 (0.18-1.41) 0.19
Psychiatric nursing 10 11 1

P < 0.05, Ref- reference.

Note: For multivariable logistic regression, the reference category for academic year was set to 2nd year to provide a more intuitive interpretation of changes in attitudes and practices as students’ progress through their academic program.

Factors associated with HPV knowledge, attitude and practice of Female Social Science Students

Factors associated with HPV knowledge of Female Social Science Students.

the multicollinearity assessment showed high tolerance for all predictors, with VIF values ranging from 1.013 to 1.252, indicating the independence of the variables included in the final model.

The multivariable model for knowledge of Social Science students showed a significant Hosmer–Lemeshow result (X2 = 26.26, P = 0.001). However, the model demonstrated an overall classification accuracy of 80.3% and a Nagelkerke R square of 0.237, suggesting that the model explains 23.7% of the variance in knowledge and remains a useful tool for identifying key predictors. Furthermore, no evidence of multicollinearity (Max VIF = 1.25).

The multivariable model for prevention practice among Social Science students demonstrated a robust fit to the data (Hosmer–Lemeshow test: X2 = 4.10, P = 0.77). Multicollinearity assessment showed high tolerance for all predictors, with VIF values ranging from 1.01 to 1.21, indicating the independence of the variables.

In the final model for practice, residence was identified as the only significant predictor. Students residing in urban areas had significantly lower odds of poor prevention practice compared to their rural counterparts (AOR = 0.54, 95% CI: 0.29–0.99, P = 0.047 round to 0.05). Other factors, including academic year and age, did not show statistically significant associations with prevention practice in this cohort (p > 0.05) (Table 6).

Table 6. Multivariable logistic regression of factors associated with poor HPV knowledge and poor practice among Female Social Science Students (n = 335).
Variable Category Poor Knowledge AOR (95% CI) p-value Poor Practice AOR (95% CI) p-value
Heard about HPV Yes 1.74 (0.91–3.34) 0.10 0.90 (0.48–1.68) 0.73
No (Ref) 1 1
Age 20–23 0.25 (0.07–0.93) 0.04* 1.01 (0.49–2.10) 0.97
24–26 (Ref) 1 1
Residence Urban 1.27 (0.66–2.48) 0.47 0.54 (0.29–0.99) 0.05*
Rural (Ref) 1 1
Academic Year 1st year 0.35 (0.08–1.43) 0.14 2.88 (0.35–23.63) 0.32
2nd year 0.12 (0.05–0.31) <0.001* 1.50 (0.64–3.50) 0.35
3rd year 1.48 (0.49–4.39) 0.48 1.44 (0.68–3.06) 0.34
4th year (Ref) 1 1
Department Management 1.29 (0.31–5.32) 0.72 — —
Economics 2.84 (0.70–11.51) 0.14 — —
Accounting 0.92 (0.23–3.57) 0.91 — —
Tourism 3.79 (0.75–19.12) 0.11 — —
English/Lit 2.03 (0.43–9.65) 0.37 — —
History 0.78 (0.19–3.12) 0.72 — —
Sociology 0.98 (0.24–3.91) 0.97 — —
Psychology (Ref) 1 — —

* The Exact P- Value of Urban residence is 0.047 round to 0.05.

(—) indicates variables that were not entered into the multivariable model because they did not meet the significance threshold (p < 0.25) during bivariable analysis.

Associated factors with HPV attitude of Female Social Science Students

A bi- variable logistic regression analysis was conducted to identify factors associated with poor attitude towards HPV among Social Science students of Debre Tabor University. None of the variables, including age, residence, marital status, academic year, department, and having heard about HPV, showed a statistically significant association with poor attitude (Table 7).

Table 7. Bi-variable Logistic Regression Analysis of Factors Associated with Attitude towards HPV among Social Science Students at Debre Tabor University, Debre Tabor, Ethiopia, July 2025.

Variable Category Level of Attitude OR (95% CI) P

value
Good Poor
Heard about HPV Yes 70 120 1.08 (0.69-1.68) 0.74
No 56 89 1
Age 20-23 90 159 1.27 (0.77-2.10) 0.35
24-26 36 50
Residence Urban 51 87 1.05 (0.66-1.64) 0.84
Rural 75 122 1
Academic Year 2nd year 6 7 0.62 (0.20-1.94) 0.47
3rd year 28 60 1.13 (0.64-2.00) 0.67
4th year 45 53 0.62 (0.36-1.06) 0.08

*P < 0.05, Ref- reference.

Discussion

Our study revealed a significant disparity in basic HPV awareness: 83.6% of Health Science students (HSS) had heard of HPV, compared to only 56.7% of Social Science Students (SSS). These findings contrast with the study by Yohannes et al. (2023) among adolescent school girls in Ambo Town, which reported an awareness level of 47.3%. The higher awareness in our cohorts, particularly among Health Science Students, likely reflects the cumulative effect of academic exposure and age. However, the relatively lower awareness among our Social Science Students (56.7%) suggests that the awareness gains seen in earlier school years, as documented by Yohannes et al., are not being sufficiently sustained or expanded for Social Science students upon entering higher education [11].

However, despite this difference in awareness, the significant knowledge- practice gap in our study reveals a key challenge for HPV prevention. Consistent with prior research in developing nations, a substantial portion of our study population demonstrated a poor level of HPV knowledge [14,15]. This deficit was particularly pronounced among Social Science students, where over 80% were categorized as having poor knowledge. While health science students exhibited a higher proportion of good knowledge, a majority (61.2%) still fell into the poor knowledge category. This finding is significant as it challenges the assumption that students in health-related fields are inherently well-informed on public health issues like HPV.

Significant disparities in primary information sources likely drive the observed knowledge gap, with health science students (HSS) primarily utilizing academic curriculum (67.5%) while Social Science students (SSS) predominantly rely on social media (45.0%). Despite these differences, a critical knowledge-practice gap persists across both cohorts; for example, 57.3% of HSS demonstrated positive attitudes toward HPV, yet vaccination remains exceptionally low at 18.2%. Similarly, SSS students exhibited low positive attitudes (37.6%) and comparably low practice (15.2%), suggesting that substantial non-cognitive barriers-such as cost, access, and logistical hurdles-prevent favorable sentiments from translating into preventive action. [16–18].

Furthermore, while Yohannes et al. (2023) identified that positive attitudes toward vaccination were high among younger adolescents (72.8%), our study found a significant decay in these sentiments among Social Science University Students (37.6%) [11].This cross- sectional finding suggests that positivity may differ by academic year, but longitudinal data are needed to confirm a true decline.. This highlights that university-based interventions cannot assume that awareness built during primary or secondary schooling is sufficient to drive vaccination practice in young adulthood.

Our comparative analysis, identified distinct predictors of HPV knowledge and prevention practice for each student group, emphasizing the need for educational strategies. Our finding that HPV knowledge is low among university students aligns with similar studies conducted at Addis Ababa University and Jimma University [19,20]

Predictors for poor KAP varied significantly by discipline; for health science students (HSS), a lack of prior HPV awareness was the strongest determinant of both poor knowledge (AOR = 6.96, 95% CI: 1.65–35.12: p < 0.001) and poor practice (AOR = 7.61, 95% CI:1.65–35.12: p = 0.01), confirming that basic awareness is foundational yet currently insufficient in depth. Conversely, Social Science students (SSS) displayed a paradoxical trend where being in the 2nd academic year (AOR = 0.12,95%CI: 0.05–0.31: p < 0.001) and the 20–23 age group (AOR = 0.25,95% CI: 0.07–0.93: p = 0.04) were protective against poor knowledge compared to seniors. This suggests that while initial, potentially social-media-driven exposure provides early awareness, this knowledge is not reinforced as students’ progress through a non-health-related curriculum, creating an observed gap in later academic years.

Unlike Getaneh et al. (2021), who identified that being in a senior year of study was a positive predictor for screening knowledge [12], our comparative analysis found a more nuanced trend. In our Social Science cohort, seniority did not significantly improve vaccination practice, whereas it did for Health Science students. This may indicate that the ‘academic maturation’ effect noted in the Gondar study may be limited to students in health-related fields. For students in the Social Sciences, the observed gap in later academic years persists throughout their university tenure, highlighting a missed opportunity for institutional health promotion that the Getaneh study did not explore.

Among Social Science students (SSS), residence was the sole significant predictor of HPV prevention practices. Students from urban areas were significantly less likely to report poor practice (AOR = 0.54, 95% CI: 0.29–0.99, P = 0.047) compared to their rural counterparts. This suggests that urban residence may afford better access to information or vaccination services, whereas rural students face geographic or structural barriers to care.

While academic year was a significant predictor of knowledge, it did not statistically influence practice in this cohort (P > 0.05). This “knowledge-practice gap” emphasizes that increasing academic awareness alone is insufficient for non-health tracks; targeted interventions must address the practical barriers faced by rural students. Furthermore, while this study focused on academic]discipline, the Ethiopian context necessitates exploring unmeasured cultural and religious influences on sexual health. Expanding future research to include male students remains critical for achieving community-wide immunity and meeting the WHO “90-70-90” targets [21].

While Yohannes et al. (2023) noted that teachers and health workers were primary information sources for younger girls, our results show a shift in the information landscape for university students. For our Social Science cohort, social media (45.0%) has overtaken institutional sources. This evolution in information-seeking behavior between adolescence and university age is a critical finding of our study, identifying social media reliance was associated with lower knowledge scores; this finding generates the hypothesis that social media content may lack sufficient clinical detail. We did not directly assess misinformation exposure; this interpretation is speculative and requires confirmation.

Our findings regarding the disparity in attitudes between HSS (55.4% positive) and SSS (37.6% positive) build upon the regional evidence provided by Getaneh et al. (2021). In their study at the nearby University of Gondar, they reported that only 13.7% of students had ever undergone cervical cancer screening, despite a majority having heard of the disease. While Getaneh et al. highlighted a massive gap in screening utilization among a general undergraduate population, our study identifies that a similar, discipline-specific gap exists for primary prevention (vaccination). Specifically, we demonstrate that even when students are in an environment with high screening awareness (like Northwest Ethiopia), those in Social Science tracks remain significantly more hesitant toward vaccination than their health science peers. This suggests that regional awareness of screening does not ‘spill over’ into vaccine acceptance without discipline-specific curriculum intervention.

Our finding of 18.2% vaccination uptake is strikingly similar to a 2022 study in Bahir Dar City, which reported a 16% uptake among female preparatory students (Likneh et al., 2022) [22]. This suggests that as female students transition from primary education to higher levels in the Amhara region, vaccination coverage remains consistently low. The significantly higher uptake (66.5%) reported in North Shoa (Kassa et al., 2021) was observed among primary school girls, who are the primary target of Ethiopia’s school-based National Expanded Program on Immunization [23]. In contrast, our study population consists of university students who likely missed these initial school-based campaigns and face greater barriers to accessing the vaccine as young adults.

Our findings of low vaccination rates among university students mirror trends observed across other Low- and Middle-Income Countries (LMICs). For instance, studies in Nigeria have noted uptake rates ranging from 1.5% to 20.4% among university students, with vaccine unavailability (66.7%) and lack of awareness (63.2%) identified as primary barriers [24]. In India, a study among female nursing and paramedical students reported only 7.7% vaccination coverage, with high cost (64.9%) and lack of information (25.4%) as major obstacles [25]. Similarly, in Malaysia, 40% of university students had not received the vaccine and had no scheduled appointment, highlighting that university students often fall into a ‘catch-up’ gap where the absence of campus-based vaccination clinics hinders preventive action [26]. This highlights a universal challenge: the transition to higher education often results in a loss of momentum for series completion or initial uptake if not supported by institutional health services.

Ethiopian national data from 2025 reports a 30.8% HPV vaccination uptake among school girls, while a meta-analysis estimated regional acceptance at 41.46% (PMA Ethiopia, 2025; BMC Public Health, 2023) [27,28]. Our lower reported practice (15.2%–18.2%) suggests that actual uptake in the university setting is lagging behind national expectations, indicating a critical need for university-based catch-up programs.

The low vaccination uptake, despite positive attitudes, highlights a critical challenge for achieving the WHO’s Global Strategy to Accelerate the Elimination of cervical cancer [29]. This global strategy aims to achieve a “90-70-90” target by 2030, which includes vaccinating 90% of girls by age 15 [30,31]. While Ethiopia has demonstrated a strong commitment to this goal by incorporating the HPV vaccine into its national immunization program, recent coverage rates remain far below this target, with administrative coverage for the two-dose schedule at 74% in 2022 and with the country having since shifted to a single dose schedule [32,33]. The low vaccination rate in our study is not merely a result of poor individual knowledge, but a reflection of systemic policy barriers. Ethiopia’s HPV vaccine rollout primarily targets 9–14-year-olds; university students are not currently a priority group for routine national campaigns, resulting in low coverage in this age cohort. Therefore, for Ethiopia to approach its ‘90-70-90’ targets, national strategies must be complemented by localized, data-driven interventions at the institutional level.

The discrepancy between the positive attitudes observed in our study and the low vaccination rates is a major finding, mirroring a well-documented challenge in low- and middle-income countries (LMICs) [34,35]. This gap suggests that factors beyond simple awareness are at play. In the Ethiopian context, these barriers include logistical and financial hurdles such as inconsistent vaccine supply, inadequate cold chain infrastructure, and the high cost of vaccination, which can be prohibitive even when the vaccine is available [36]. Vaccine hesitancy, fueled by misinformation and social stigma surrounding sexual health, also remains a significant barrier to uptake in many communities [37,38].

Our findings therefore suggest that university-based interventions could serve as a valuable platform for achieving national and global goals by addressing both the attitudinal and logistical barriers. Implementing targeted educational campaigns in these settings could not only raise awareness but also directly address misinformation and hesitancy. Furthermore, integrating vaccination services directly within the university health system could improve accessibility and overcome logistical challenges, thereby converting positive attitudes into tangible prevention practices. This approach aligns with the National Cancer Control Plan of Ethiopia (2025–2029), which prioritizes increasing access to HPV vaccination as a key strategy for reducing the national cancer burden [39].

Study limitations and strengths

This study employed a comparative cross-sectional design, which provides a valuable snapshot of the current situation but cannot establish causal relationships between the variables. Additionally, the self-reported nature of our data is also subject to recall and social desirability bias. Furthermore, our operational definition of ‘good practice’ was receiving at least one dose of the HPV vaccine; this was a pragmatic choice, but it does not differentiate between partial and full vaccination according to the national schedule at the time of vaccination. Nevertheless, a key strength of this research is its comparative nature, which provides a detailed, nuanced understanding of the differences in KAP and associated factors between two distinct student populations, a critical step for developing effective, evidence-based interventions.

While this study achieved its target sample size with a 100% response rate, the use of non-probability convenience sampling is a limitation that may impact internal validity. This approach introduces a potential for selection bias, as students who were present in class during the data collection window were the ones recruited, potentially differing from those who were absent. To ensure the target was met, recruitment continued within each department until the pre-specified quota of 335 students per college was achieved. This high level of participation ensures that the captured data represents the majority of students active during the study period, providing a solid foundation for this comparative analysis.

Our study did not measure psychological constructs such as perceived susceptibility or barriers to vaccination, which may mediate the knowledge-practice gap observed. Future research should incorporate validated Health Belief Model instruments. In addition, prevention practices were measured solely by vaccination uptake; screening behaviors (e.g., Pap smears) and vaccination intentions were not assessed. Consequently, we cannot determine whether current attitudes will predict future screening or vaccine uptake.

Furthermore, some of the measures of association in the multivariable models exhibited wide confidence intervals, particularly concerning vaccine practice and awareness. These results suggest a limited degree of statistical precision for certain sub-categories. While the associations remain statistically significant, the instability of these specific estimates should be considered when generalizing these findings to broader populations.

Our cross-sectional design was unable to differentiate between students who were ineligible for vaccination, those who were hesitant, and those who lacked access. A future study using qualitative methods or a more detailed survey could provide critical insights into the specific reasons for low vaccination rates. Future longitudinal studies should incorporate cervical cancer screening behaviors and vaccination intentions to provide a more holistic assessment of HPV prevention strategies among university students.

Conclusion and implications

Based on our observational findings, we recommend university-wide HPV initiatives at Debre Tabor University to address pervasive knowledge deficits, particularly among Social Science students (80.9% poor knowledge). For health science cohorts, interventions should focus on curriculum-driven strategies to bridge the attitude-practice gap, while Social Science disciplines require tiered, peer-led campaigns and mandatory foundational public health modules to counter lower knowledge levels observed in later academic years. Institutional strategies could complement national efforts, though cross-sectional KAP studies cannot directly measure progress toward elimination targets [40]. Therefore, future research must utilize qualitative methods to investigate the socio-cultural drivers of vaccine hesitancy. Such data-driven, discipline-specific approaches are vital for converting awareness into tangible preventive actions and reducing the national cervical cancer burden in Ethiopia.

Supporting information

S1 Data. De-identified dataset for Health Science students (n = 335).

This SPSS file contains the raw data used for the comparative analysis of HPV knowledge, attitudes, and prevention practices, including socio-demographic characteristics, awareness, knowledge scores, attitude scores, and vaccination status.

(SAV)

pone.0359838.s001.sav (24.9KB, sav)
S2 Data. De-identified dataset for Social Science students (n = 335).

This SPSS file contains the raw data used for the comparative analysis of HPV knowledge, attitudes, and prevention practices, including socio-demographic characteristics, awareness, knowledge scores, attitude scores, and vaccination status.

(SAV)

pone.0359838.s002.sav (24.8KB, sav)

Acknowledgments

We extend our sincere gratitude to Debre Tabor University for providing the ethical clearance and support necessary for this study. Our thanks also go to all the female health and Social Science students who generously gave their time and provided honest responses, making this research possible.

Abbreviations

AOR

Adjusted Odds Ratio

DTU

Debre Tabor University

HBM

Health Belief Model

HPV

Human Papillomavirus

WHO

World Health Organization

OR

Odds Ratio

LMICs

Low- and middle-income countries

SSS

Social Science students

HSS

Health science students

Data Availability

All relevant data are within the paper and its Supporting information files.

Funding Statement

The author(s) received no specific funding for this work.

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Decision Letter 0

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14 Apr 2026

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Additional Editor Comments:

Dear Authors,

Thank you for submitting your manuscript examining HPV-related knowledge, attitudes, and prevention practices among university students in Ethiopia. Both reviewers recognize that your study addresses an important and policy-relevant public health issue, particularly within the context of cervical cancer prevention and global elimination efforts. The comparative approach between health science and social science students, as well as the relatively large sample size, are notable strengths.

However, after careful evaluation of the reviewers’ comments, I must inform you that the manuscript requires major revision before it can be considered further for publication. There are substantial concerns regarding methodological clarity, analytical rigor, and interpretation of findings that need to be addressed comprehensively.

Below, I synthesize the key issues raised by both reviewers to guide your revision.

Major Issues Requiring Revision

1. Study Design and Conceptual Clarity

The manuscript repeatedly describes the study as a “prospective cross-sectional” design, which is methodologically incorrect. A cross-sectional study is not prospective unless repeated measures or follow-up are involved.

Please revise this terminology consistently throughout the manuscript.

The Health Belief Model (HBM) is mentioned but not clearly operationalized in the analysis.

Either incorporate measurable HBM constructs (e.g., perceived susceptibility, barriers) into the analysis or remove/reduce this theoretical framing.

2. Sampling Procedure and Risk of Bias

There are critical inconsistencies and missing details regarding sampling:

Contradiction between multi-stage/random sampling and convenience sampling

Missing essential elements:

Sampling frame

Stage-wise selection procedures

Proportional allocation

Response rate

These gaps raise concerns about selection bias and internal validity.

You must:

Clearly describe the exact sampling procedure step-by-step

Resolve inconsistencies across sections

Explicitly acknowledge limitations if non-probability sampling was used

3. Outcome Definitions and Measurement

Several conceptual and operational issues were identified:

The classification of knowledge and attitude (e.g., ≥50% cut-off) appears arbitrary

Provide justification or cite validated instruments

The statement that >60% reflects “poor knowledge” requires clarification and justification

The definition of “practice” is inconsistent:

Defined as full vaccination (two doses) in one section

Later described as at least one dose

Measuring practice solely through vaccination is too narrow

Consider including screening behavior or intention if data are available

4. Statistical Analysis and Reporting

The manuscript lacks key epidemiological reporting standards:

No clear explanation of:

Variable selection criteria (e.g., p-value thresholds such as p<0.25)

Model-building strategy (stepwise vs. forced entry)

Missing diagnostics:

Multicollinearity assessment (e.g., VIF, tolerance)

Model fit (e.g., Hosmer–Lemeshow test, pseudo R²)

Additionally:

Some estimates show wide confidence intervals, indicating instability

Interpret cautiously and acknowledge limited precision

5. Results Presentation

Inconsistencies in reported sample size (e.g., 335 vs. 670)

Unclear denominators (e.g., source of information n=286)

Table issues:

Poor formatting and unclear structure (e.g., Table 5)

Inappropriate reference category (e.g., use of 5th year instead of 1st year)

Incorrect p-value reporting (e.g., “0.00” should be reported as “<0.001”)

Revise all tables for clarity, accuracy, and consistency with journal standards.

6. Interpretation and Overstatement of Findings

The manuscript makes causal and temporal interpretations (e.g., knowledge decay, “window of disengagement”) that are not supported by cross-sectional data

Claims regarding contribution to Ethiopia’s 90–70–90 targets should be substantially toned down

Statements about misinformation and behavioral trends are speculative and should be clearly framed as such or removed

7. Discussion – Depth and Context

The discussion requires strengthening:

Expand literature comparison, especially:

Studies from Africa and other LMICs

University-based HPV interventions

Provide contextual discussion of:

HPV vaccine availability in Ethiopia

National rollout status

Cost and policy barriers

Current vaccination rates (18.2% and 15.2%) are very low but insufficiently contextualized

8. Data Availability (PLOS ONE Policy Compliance)

The statement “data available upon reasonable request” does not comply with PLOS ONE policy

You must:

Deposit data in a public repository, OR

Provide a clear and justified restriction with an access mechanism

Minor Issues

Language and grammar: The manuscript requires professional English editing (grammar, capitalization, tense consistency)

Abstract: Simplify methods and include clearer effect size reporting with confidence intervals

Terminology: Ensure consistent use of terms (e.g., HSS, SSS)

References: Revise for completeness and adherence to journal format

Formatting: Improve table titles, remove redundancy, and ensure consistency across sections

We look forward to receiving your revision

[Note: HTML markup is below. Please do not edit.]

Reviewers' comments:

Reviewer's Responses to Questions

Comments to the Author

1. Is the manuscript technically sound, and do the data support the conclusions?

Reviewer #1: Yes

Reviewer #2: Yes

**********

2. Has the statistical analysis been performed appropriately and rigorously? -->?>

Reviewer #1: Yes

Reviewer #2: No

**********

3. Have the authors made all data underlying the findings in their manuscript fully available??>

The PLOS Data policy

Reviewer #1: Yes

Reviewer #2: No

**********

4. Is the manuscript presented in an intelligible fashion and written in standard English??>

Reviewer #1: No

Reviewer #2: Yes

**********

Reviewer #1: Reviewer Comments to the Authors

General Assessment

This manuscript addresses an important public health issue HPV-related knowledge, attitudes, and prevention practices among university students in Ethiopia using a comparative approach between health and social science disciplines. The topic is timely and relevant to global cervical cancer elimination strategies. The comparative design is a notable strength. However, several methodological inconsistencies, reporting issues, and interpretative concerns must be addressed before the manuscript can be considered for publication.

Major Comments

1. Study Design and Conceptual Clarity

- The manuscript inconsistently describes the study as “prospective” and “cross-sectional.” A cross-sectional study is, by definition in abstract and main manuscript, not prospective. Please revise throughout for consistency.

-The use of the Health Belief Model (HBM) is mentioned; however, it is not operationalized in the analysis. Variables corresponding to HBM constructs (e.g., perceived susceptibility, barriers) are not clearly measured or analyzed.

→ Recommendation: Either integrate HBM variables into the analysis or remove/reduce the theoretical claim.

2. Sampling Procedure – Major Inconsistency

The manuscript states:

Use of multi-stage sampling and simple random sampling in abstract, but later reports convenience sampling.

This is a critical methodological contradiction that undermines internal validity.

→ Clarify:

- Exact sampling steps

- Whether probability sampling was truly implemented

- If convenience sampling was used, acknowledge selection bias explicitly.

3. Outcome Definitions – Conceptual Issues

The definition of “practice” is problematic:

- Defined as completion of two-dose vaccination, yet later the limitation section states “at least one dose”.→ This inconsistency must be corrected.

- Using ≥50% cut-off for knowledge and attitude is arbitrary→ Provide justification or cite validated tools.

- Practice measured only via vaccination is too narrow→ Consider including screening behavior or intention.

4. Data Availability – Not Compliant with Journal Policy

The statement “data available upon reasonable request” does not meet PLOS ONE requirements.

→ Authors must:

- Deposit data in a public repository, OR

- Provide a justified restriction (e.g., ethical/legal constraints with access mechanism).

5. Statistical Analysis – Insufficient Detail

The manuscript lacks key information:

- Variable selection criteria for multivariable models

- Multicollinearity assessment

- Model diagnostics (e.g., Hosmer-Lemeshow test)

Some reported findings are unstable (wide CIs), e.g.: AOR = 7.61 (1.65–35.12)

→ Interpret cautiously and acknowledge limited precision.

6. Results Section – Reporting Issues

In Table 2: Total respondents are incorrectly described as 335 instead of 670 in text.

- Source of information denominator (n=286) is unclear→ Explain missing data handling.

- Some tables: Lack clarity (e.g., Table 5 formatting, inconsistent totals), avoid redundancy between text and tables.

7. Interpretation – Overstatement of Findings

The concept of “window of disengagement” is interesting but:

- Not directly measured

- Based on cross-sectional data → cannot infer temporal trends

Claims regarding: Social media “misinformation” and Knowledge decay over time→ These are speculative and should be toned down.

8. Discussion – Needs Better Balance

- The discussion is overly narrative and repetitive.

- Some comparisons lack critical appraisal of differences in study settings.

- Limited engagement with Ethiopian national HPV policy context, Vaccine availability and cost barriers

Minor Comments

9. Language and Grammar

The manuscript requires extensive English editing:

- Capitalization errors (e.g., “Prevalent”, “Cervical Cancer”)

- Inconsistent tense usage

Suggest professional language editing.

10. Abstract:

- Methods section is too dense

- Include clearer reporting of effect sizes with CI

11. Terminology Consistency

- Ensure consistent use of:

“Health Science Students (HSS)”

“Social Science Students (SSS)”

Avoid switching terms throughout.

12. Tables and Formatting

Improve:

- Table titles (more descriptive)

- Alignment and formatting

- Remove unnecessary duplication.

13. References

Some references:

- Appear incomplete or inconsistently formatted

- Ensure adherence to journal style.

Strengths of the Study

Large sample size (n=670

# Comparative design across disciplines

# Focus on an under-researched population in Ethiopia

# Policy-relevant findings aligned with global target

Recommendation

Major Revision

The manuscript has strong potential but requires substantial methodological clarification, correction of inconsistencies, and improved analytical rigor before it can be considered for publication.

Reviewer #2: The manuscript addresses an important public-health topic (HPV knowledge, attitude, and prevention practices among university students).However, address the issues to improve the article standard.

1. The manuscript states:“prospective institutional-based comparative cross-sectional study”

This is methodologically incorrect terminology. A cross-sectional study cannot be prospective unless repeated measurement or follow-up exists.

2. In line 42, 43: Author claimed However, both groups

43 exhibited poor knowledge (HSS: 61.2%; SSS: 80.9%). How it was measured? is more than 60% poor?

3. Outcome variables categorized as:good/poor, cut-off criteria should have reference.

4. The study states:

selected via multistage sampling However:Missing: • sampling frame • stage-wise selection steps • proportional allocation method • response rate

Without these: Risk of selection bias

5. Regression model includes predictors but manuscript does not explain: whether variables entered based on p<0.25/p<0.20/p<0.05 screening • stepwise vs forced entry model. Standard epidemiologic reporting missing.

6. Multicollinearity assessment not reported. Expected reporting:VIF values ,tolerance values, Hosmer–Lemeshow test, pseudo-R² missing.

6. In table 5, Why 5th year was used as reference?. It should be 1st. In table 6, 0.00 was reported in the academic year. It should be 0.001*

7. Vaccination rate discussion insufficient: Vaccination rates extremely low:• 18.2% • 15.2%

But manuscript does not discuss:vaccine availability , • national rollout status • cost barriers or policy context

8. Literature comparison limited

Discussion lacks:• regional comparison (Africa / Asia) • LMIC HPV vaccination studies • university-level interventions evidence

9. Over-interpretation risk;Study claims implications for:achieving Ethiopia’s 90-70-90 targets

However:Cross-sectional KAP studies cannot evaluate progress toward elimination targets. This should be softened.

**********

what does this mean?). If published, this will include your full peer review and any attached files.

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Do you want your identity to be public for this peer review?  For information about this choice, including consent withdrawal, please see our Privacy Policy

Reviewer #1: No

Reviewer #2: Yes:  Mohammad Injamul Hoq

**********

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PLoS One. 2026 Oct 5;21(10):e0359838. doi: 10.1371/journal.pone.0359838.r002

Author response to Decision Letter 1


18 May 2026

Dear Editor and Reviewers, on behalf of the authoring team, I would like to express our sincere gratitude for the constructive feedback provided during the initial review of our manuscript. In this revised version, we have not only addressed each of the reviewers' specific comments but have also undertaken a comprehensive internal audit to enhance the transparency, statistical robustness, and methodological clarity of our findings.

Major Issues Requiring Revision

1. Study Design and Conceptual Clarity

The manuscript repeatedly describes the study as a “prospective cross-sectional” design, which is methodologically incorrect. A cross-sectional study is not prospective unless repeated measures or follow-up are involved.

Response- the authors agree on the above comment; we removed the term ‘prospective’

Please revise this terminology consistently throughout the manuscript.

The Health Belief Model (HBM) is mentioned but not clearly operationalized in the analysis.

Either incorporate measurable HBM constructs (e.g., perceived susceptibility, barriers) into the analysis or remove/reduce this theoretical framing.

Response- We have removed the reference to the Health Belief Model, as our survey did not directly operationalize its constructs. The manuscript now presents the findings without theoretical framing, which we believe improves clarity and honesty regarding our data's limitations

2. Sampling Procedure and Risk of Bias

There are critical inconsistencies and missing details regarding sampling:

Contradiction between multi-stage/random sampling and convenience sampling

Missing essential elements:

Sampling frame

Stage-wise selection procedures

Proportional allocation

Response rate

These gaps raise concerns about selection bias and internal validity.

You must:

Clearly describe the exact sampling procedure step-by-step

Resolve inconsistencies across sections

Explicitly acknowledge limitations if non-probability sampling was used

Response- We have revised the Sampling section to accurately reflect the use of convenience sampling due to the lack of a real-time sampling frame, resolving the previous contradiction between random and convenience methods. We have clarified the participant flow in the Data collection section line 161 to 164. We employed a quota-based recruitment strategy where data collection was maintained within each academic cohort until the pre-calculated sample size of 335 per group (Total N=670) was reached. This ensured the study achieved 100% of its intended sample size to maintain statistical power. We have also updated the Limitations section line 444 to 451 to explicitly acknowledge the selection bias inherent in convenience sampling and how it relates to the internal validity of our findings.

3. Outcome Definitions and Measurement

Several conceptual and operational issues were identified:

The classification of knowledge and attitude (e.g., ≥50% cut-off) appears arbitrary

Provide justification or cite validated instruments

The statement that >60% reflects “poor knowledge” requires clarification and justification

The definition of “practice” is inconsistent:

Defined as full vaccination (two doses) in one section

Later described as at least one dose

Measuring practice solely through vaccination is too narrow

Consider including screening behavior or intention if data are available.

Response- We have addressed these conceptual concerns as follows:

Standardized Definition: We have standardized the definition of "Practice" as receiving at least one dose of the HPV vaccine. This definition is now used consistently across the Methods (Line 177to 179), Results, and Discussion.

Acknowledging Scope: We agree that including screening and intention data would have strengthened the study. Since this data was not collected, we have explicitly acknowledged this as a limitation (Line 414 to 417).

Future Recommendations: We have added a recommendation (Line 421-423) for future research to include screening behaviors and behavioral intentions to provide a more comprehensive view of HPV prevention.

4. Statistical Analysis and Reporting

The manuscript lacks key epidemiological reporting standards:

No clear explanation of:

Variable selection criteria (e.g., p-value thresholds such as p<0.25)

Model-building strategy (stepwise vs. forced entry)

Missing diagnostics:

Multicollinearity assessment (e.g., VIF, tolerance)

Model fit (e.g., Hosmer–Lemeshow test, pseudo R²)

Additionally:

Some estimates show wide confidence intervals, indicating instability

Interpret cautiously and acknowledge limited precision

Response- We have comprehensively revised the statistical reporting to adhere to PLOS ONE’s standards: Variable Selection: We have specified that variables with p < 0.25 in bivariable analysis were entered into the multivariable model using backward stepwise elimination (Methods, Lines 215–226). Diagnostics: We now report Hosmer–Lemeshow test results, Nagelkerke R², and Classification Accuracy for all models. For the SSS knowledge model, we have justified its use despite the H-L result by highlighting its 80.3% predictive accuracy. Multicollinearity: We have confirmed model stability with VIF values for all predictors (HSS Max VIF = 1.836; SSS Max VIF = 1.252). Precision: We have added cautionary statements regarding variables with wide confidence intervals in both the Results and Limitations.

5. Results Presentation

Inconsistencies in reported sample size (e.g., 335 vs. 670)

Unclear denominators (e.g., source of information n=286)

Table issues:

Poor formatting and unclear structure (e.g., Table 5)

Inappropriate reference category (e.g., use of 5th year instead of 1st year)

Incorrect p-value reporting (e.g., “0.00” should be reported as “<0.001”)

Revise all tables for clarity, accuracy, and consistency with journal standards.

Response- We thank the editor for the constructive feedback regarding our statistical reporting. We have revised the Data Processing and Analysis section (Lines 215 to 224) and the Results section (Lines 262 to 269 and 288 to 289) to incorporate these key epidemiological standards:

Variable Selection and Model Building: We have clarified that variables with a p-value < 0.25 in the bivariable analysis were selected as candidates for the multivariable logistic regression. A backward stepwise elimination method was employed to identify independent predictors and control for potential confounders.

Multicollinearity Assessment: We performed diagnostic checks for multicollinearity using the Variance Inflation Factor (VIF). All values were well below the threshold of 10 (Health Science VIF range: 1.02–1.84; Social Science VIF range: 1.01–1.25), confirming the independence of the predictors.

Model Fit and Diagnostics: We have now reported the Hosmer–Lemeshow (H-L) test and Nagelkerke R Square for all multivariable models to demonstrate model fitness:

Health Science Cohort: The models showed adequate fit for both Knowledge (p = 0.336) and Practice (p = 0.066).

Social Science Cohort: The Practice model showed an excellent fit (p = 0.858). While the Knowledge model yielded a significant H-L result (p = 0.001), we confirmed its predictive utility through a high overall classification accuracy of 80.3% and a Nagelkerke R Square of 0.237.

Interpretation of Confidence Intervals: We acknowledge that some variables, such as 'Heard about HPV' in Table 4, exhibited wide 95% Confidence Intervals (CI: 1.65–35.12). We have added a cautionary statement in the Results (Lines 262 to 265) and Limitations sections (Lines 449 to 453) acknowledging that these specific estimates have limited precision and should be interpreted with caution.

Refined P-value Reporting: All p-values previously reported as "0.000" have been corrected to < 0.001 throughout the manuscript and tables.

Sample Size Consistency: We have updated the text and Table 2 to consistently reflect the total sample (N=670) and the equal distribution between the two study cohorts (n=335 each).

Denominator Clarification: We have clarified that the denominator for 'Source of Information' is derived only from participants with prior HPV awareness (n=470 total). We have added a specific footnote to Table 2 to explain this skip-logic, confirming that no data was missing, but rather that the question was only applicable to aware participants.

Table 5 Refinement: We have reformatted Table 5 for clarity and removed redundant descriptions from the text, as suggested.

6. Interpretation and Overstatement of Findings

The manuscript makes causal and temporal interpretations (e.g., knowledge decay, “window of disengagement”) that are not supported by cross-sectional data

Claims regarding contribution to Ethiopia’s 90–70–90 targets should be substantially toned down

Statements about misinformation and behavioral trends are speculative and should be clearly framed as such or removed

Response- We have systematically toned down all causal and overreaching claims throughout the manuscript. First, we replaced causal language such as "knowledge decay" and "window of disengagement" with descriptive phrasing (e.g., "lower knowledge levels observed in later academic years") and added a disclaimer that these are hypotheses requiring longitudinal testing, as cross-sectional data cannot establish temporal trends. Second, we softened claims regarding Ethiopia's 90-70-90 targets: "requires" was changed to "could potentially contribute to," and we explicitly state that cross-sectional KAP studies cannot directly measure progress toward elimination targets. Third, we reframed speculation about misinformation as hypotheses (e.g., "may be associated with," "generates the hypothesis that") and added an explicit acknowledgment that we did not directly measure misinformation exposure. Finally, we added a new sentence to the Limitations section stating that all observed associations are correlational and causal inferences cannot be drawn. All changes are highlighted in the revised manuscript.

7. Discussion – Depth and Context The discussion requires strengthening:

Expand literature comparison, especially: Studies from Africa and other LMICs University-based HPV interventions

Provide contextual discussion of: HPV vaccine availability in Ethiopia

National rollout status

Cost and policy barriers

Current vaccination rates (18.2% and 15.2%) are very low but insufficiently contextualized

Response- We have revised the Discussion (Lines 406 to 418 and 426 to 429) to provide a rigorous contextualization of our vaccination rates using recent Ethiopian literature:

Regional Alignment: We noted that our results align with findings from Bahir Dar (16%), confirming the validity of our data in the Amhara region.

Target Group Disparity: We contrast our 18.2% rate with the 66.5% reported in primary schools (Kassa et al., 2021), explaining that university students fall into a "policy gap" as they are outside the primary target age for national school-based campaigns.

National Comparison: We have benchmarked our findings against the 2025 PMA national survey (30.8%) and the 2023 regional meta-analysis (41.46%), highlighting that university-aged women represent a underserved population in Ethiopia’s current vaccine rollout strategy.

8. Data Availability (PLOS ONE Policy Compliance)

The statement “data available upon reasonable request” does not comply with PLOS ONE policy

You must:

Deposit data in a public repository, OR

Provide a clear and justified restriction with an access mechanism

Response- Thank you for this guidance regarding the PLOS ONE Data Availability Policy. We have updated our statement and our submission to ensure full compliance. We have now provided all relevant raw data as Supporting Information files.

These files include the fully de-identified datasets for both the Health Science and Social Science student cohorts, allowing for complete replication of our reported results, including the multivariable logistic regression and model diagnostics (VIF and Hosmer-Lemeshow tests).

Minor Issues

Language and grammar: The manuscript requires professional English editing (grammar, capitalization, tense consistency)

Abstract: Simplify methods and include clearer effect size reporting with confidence intervals

Terminology: Ensure consistent use of terms (e.g., HSS, SSS)

References: Revise for completeness and adherence to journal format

Formatting: Improve table titles, remove redundancy, and ensure consistency across sections

Response-

We look forward to receiving your revision

Reviewers' comments:

Reviewer #1: Reviewer Comments to the Authors and Author’s response

General Assessment

This manuscript addresses an important public health issue HPV-related knowledge, attitudes, and prevention practices among university students in Ethiopia using a comparative approach between health and social science disciplines. The topic is timely and relevant to global cervical cancer elimination strategies. The comparative design is a notable strength. However, several methodological inconsistencies, reporting issues, and interpretative concerns must be addressed before the manuscript can be considered for publication.

Major Comments

1. Study Design and Conceptual Clarity

- The manuscript inconsistently describes the study as “prospective” and “cross-sectional.” A cross-sectional study is, by definition in abstract and main manuscript, not prospective. Please revise throughout for consistency.

-The use of the Health Belief Model (HBM) is mentioned; however, it is not operationalized in the analysis. Variables corresponding to HBM constructs (e.g., perceived susceptibility, barriers) are not clearly measured or analyzed.

→ Recommendation: Either integrate HBM variables into the analysis or remove/reduce the theoretical claim.

Response- We thank the reviewer for identifying this inconsistency. We have removed the term "prospective" from the Abstract and the Methods section. The study is now consistently described as a "comparative cross-sectional study" throughout the manuscript.

Regarding Health belief model- Since our primary objective was to compare epidemiological determinants between the two student cohorts rather than to validate HBM constructs, we have removed the theoretical claims regarding the Health Belief Model from the Introduction and Methods sections. This ensures that our theoretical framework is fully aligned with our data analysis.

2. Sampling Procedure – Major Inconsistency

The manuscript states:

Use of multi-stage sampling and simple random sampling in abstract, but later reports convenience sampling.

This is a critical methodological contradiction that undermines internal validity.

→ Clarify:

- Exact sampling steps

- Whether probability sampling was truly implemented

- If convenience sampling was used, acknowledge selection bias explicitly.

Response- We have corrected the methodological contradiction identified by the reviewers. We have removed all references to 'multi-stage' and 'random' sampling. The study now consistently describes a quota-based convenience sampling approach (Methods, Lines 117 to 125). We have also added an explicit acknowledgment of selection bias as a study limitation (Limitations, Lines 461 to 468)

3. Outcome Definitions – Conceptual Issues

The definition of “practice” is problematic:

- Defined as completion of two-dose vaccination, yet later the limitation section states “at least one dose”.→ This inconsistency must be corrected.

- Using ≥50% cut-off for knowledge and attitude is arbitrary→ Provide justification or cite validated tools.

- Practice measured only via vaccination is too narrow→ Consider including screening behavior or intention.

Response- We have revised the "Operational Definitions" section (Lines 174–183) to address the conceptual concerns. Specifically, we have: Standardized the definition of Practice to "at least one dose" to ensure internal consistency.

Provided a technical justification for the 50% cut-off for knowledge and attitude, citing the modified Bloom’s criteria and relevant local literature [14].

Standardized the use of "good/poor" terminology across all KAP domains.

4. Data Availability – Not Compliant with Journal Policy

The statement “data available upon reasonable request” does not meet PLOS ONE requirements.

→ Authors must:

- Deposit data in a public repository, OR

- Provide a justified restriction (e.g., ethical/legal constraints with access mechanism).

Response- Thank you for this guidance regarding the PLOS ONE Data Availability Policy. We have updated our statement and our submission to ensure full compliance. We have now provided all relevant raw data as Supporting Information files.

These files include the fully de-identified datasets for both the Health Science and Social Science student cohorts, allowing for complete replication of our reported results, including the multivariable logistic regression and model diagnostics (VIF and Hosmer-Lemeshow tests).

5. Statistical Analysis – Insufficient Detail

The manuscript lacks key information:

- Variable selection criteria for multivariable models

- Multicollinearity assessment

- Model diagnostics (e.g., Hosmer-Lemeshow test)

Some reported findings are unstable (wide CIs), e.g.: AOR = 7.61 (1.65–35.12)

→ Interpret cautiously and acknowledge limited precision.

Response- We have comprehensively revised the statistical reporting to adhere to PLOS ONE’s standards: Variable Selection: We have specified that variables with p < 0.25 in bivariable analysis were entered into the multivariable model using backward stepwise elimination (Methods, Lines 215–226). Diagnostics: We now report Hosmer–Lemeshow test results, Nagelkerke R², and Classification Accuracy for all models. For the SSS knowledge model, we have justified its use despite the H-L result by highlighting its 80.3% predictive accuracy. Multicollinearity: We have confirmed model stability with VIF values for all predictors (HSS Max VIF = 1.836; SSS Max VIF = 1.252). Precision: We have added cautionary statements regarding variables with wide confidence intervals in both the Results and Limitations.

6. Results Section – Reporting Issues

In Table 2: Total respondents are incorrectly described as 335 instead of 670 in text.

- Source of information denominator (n=286) is unclear→ Explain missing data handling.

- Some tables: Lack clarity (e.g., Table 5 formatting, inconsistent totals), avoid redundancy between text and tables.

Response- We have corrected these reporting issues to ensure full transparency: Sample Size Consistency: We have updated the text and Table 2 to consistently reflect the total sample (N=670) and the equal distribution between the two study cohorts (n=335 each).

Denominator Clarification: We have clarified that the denominator for 'Source of Information' is derived only from participants with prior HPV awareness (n=470 total). We have added a specific footnote to Table 2 to explain this skip-logic, confirming that no data was missing, but rather that the question was only applicable to aware participants.

Table 5 Refinement: We have reformatted Table 5 for clarity and removed redundant descriptions from the text, as suggested.

7. Interpretation – Overstatement of Findings

The concept of “window of disengagement” is interesting but:

- Not directly measured

- Based on cross-sectional data → cannot infer temporal trends

Claims regarding: social media “misinformation” and Knowledge decay over time→ These are speculative and should be toned down.

Response- We have systematically toned down all causal and overreaching claims throughout the manuscript. First, we replaced causal language such as "knowledge decay" and "window of disengagement" with descriptive phrasing (e.g., "lower knowledge levels observed in later academic years") and added a disclaimer that these are hypotheses requiring longitudinal testing, as cross-sectional data cannot establish temporal trends. Second, we softened claims regarding Ethiopia's 90-70-90 targets: "requires" was changed to "could potentially contribute to," and we explicitly state that cross-sectional KAP studies cannot directly measure progress toward elimination targets. Third, we reframed speculation about misinformation as hypotheses (e.g., "may be associated with," "generates the hypothesis that") and added an explicit acknowledgment that we did not directly measure misinformation exposure. Finally, we added a new sentence to the Limitations section stating that all observed associations are correlational and causal inferences cannot be drawn. All changes are highlighted in the revised manuscript.

8. Discussion – Needs Better Balance

- The discussion is overly narrative and repetitive.

- Some comparisons lack critical appraisal of differences in study settings.

- Limited engagement with Ethiopian national HPV policy context, Vaccine availability and cost barriers

Response- We have revised the Discussion (Lines 406 to 418 and 426 to 429) to provide a rigorous contextualization of our vaccination rates using recent Ethiopian literature:

Regional Alignment: We noted that our results align with findings from Bahir Dar (16%), confirming the validity of our data in the Amhara region.

Target Group Disparity: We contrast our 18.2% rate with the 66.5% reported in primary schools (Kassa et al., 2021), explaining that university students fall into a "policy gap" as they are outside the primary target age for national school-based campaigns.

National Comparison: We have benchmarked our findings against the 2025 PMA national survey (30.8%) and the 2023 regional meta-analysis (41.46%), highlighting that university-aged women represent a underserved population in Ethiopia’s current vaccine rollout strategy.

Minor Comments

9. Language and Grammar

The manuscript requires extensive English editing:

- Capitalization errors (e.g., “Prevalent”, “Cervical Cancer”)

- Inconsistent tense usage

Suggest professional language editing.

Response- The manuscript has undergone extensive professional English editing. We have corrected capitalization errors and ensured consistent use of the past tense throughout the Methods and Results sections.

10. Abstract:

- Methods section is too dense

- Include clearer reporting of effect sizes with CI

Response- Abstract: The Methods section of the abstract has been simplified for better readability. All reported findings now include explicit Adjusted Odds Ratios (AOR) with their corresponding 95% Confidence Intervals (CI).

11. Terminology Consistency

- Ensure consistent use of:

“Health Science Students (HSS)”

“Social Science Students (SSS)”

Avoid switching terms throughout.

Response- We have standardized the terminology across the manuscript, consistently using "Health Science Students (HSS)" and "Social Science Students (SSS)."

12. Tables and Formatting

Improve:

- Table titles (more descriptive)

- Alignment and formatting

- Remove unnecessary duplication.

Response- Tables: Table titles have been revised to be more descriptive. We have improved the formatting and alignment of all tables and removed redundant data descriptions from the text.

13. References

Some references:

- Appear incomplete or inconsistently formatted

- Ensure adherence to journal style.

Response- : All references have been audited for completeness and reformatted to strictly adhere to the PLOS ONE (Vancouver) style.

Strengths of the Study

Large sample size (n=670

# Comparative design across disciplines

# Focus on an under-researched population in Ethiopia

# Policy-relevant findings aligned with global target

Recommendation

Major Revision

The manuscript has strong potential but requires substantial methodological clarification, correction of inconsistencies, and improved analytical rigor before it can be considered for publication.

Reviewer #2: The manuscript addresses an important public-health topic (HPV knowledge, attitude, and prevention practices among university students). However, address the issues to improve the article standard.

1. The manuscript states: “prospective institutional-based comparative cross-sectional study”

This is methodologically incorrect terminology. A cross-sectional study cannot be prospective unless repeated measurement or follow-up exists.

Response- We thank the reviewer for identifying this inconsistency. We have removed the term "prospective" from the Abstract and the Methods section. The study is now consistently described as a "comparative cross-sectional study" throughout the manuscript.

2. In line 42, 43: Author claimed However, both groups

43 exhibited poor knowledge (HSS: 61.2%; SSS: 80.9%). How it was measured? is more than 60% poor?

Response: We appreciate the opportunity to clarify this. The percentages reported (HSS: 61.2%; SSS: 80.9%) refer to the proportion of students in each group who were categorized as having poor knowledge.

Measurement Criteria: "Poor knowledge" was defined as achieving a score of less than 50% on the knowledge-based questions (modified Bloom’s cut-off). Therefore, 61.2% of Health Science students failed to correctly answer at least half of the knowledge questions. We have clarified this definition in the Operational Definitions section (Line 172 to 175) to prevent further ambiguity.

3. Outcome variables categorized as:good/poor, cut-off criteria should have reference.

Response: We agree with the reviewer’s suggestion. We have updated the Operational Definitions section to include the scientific justification for the categorization of our outcome variables. Specifically, the 50% cut-off point used for knowledge and attitude scores follows the modified Bloom’s criteria, a standard threshold in similar epidemiological studies conducted in Ethiopia. We have added the following reference to support this:

Mekonnen BA, Anagaw YK, Kassahun BA, Worku MC. Evaluation of female university students’ knowledge, attitudes, and practices toward human papillomavirus infection and vaccination. Multicenter cross-sectional study. BMC Women's Health. 2024;24(1):437.

These changes can be found in the revised manuscript in the Methods section (Lines 172–185).

4. The study states:

selected via multistage sampling However: Missing: • sampling frame • stage-wise selection steps • proportional allocation method • response rate

Without these: Risk of selection bias

Response: We have revised the sampling section (Lines 117–125) to provide full methodological transparency.

Design Clarification: We have clarified that a quota-based convenience sampling approach was used instead of a probability-based multistage design, as a formal sampling frame (student roster) was unavailable.

Stage-wise Selection: We now describe the two-stage process: purposive college selection followed by proportional allocation across departments.

Response Rate: We have explicitly stated the response rate (100%) and explained the data collection window (June to July 2025).

Selection Bias: To address the reviewer's concern, we have also added a statement in the Limitations section acknowledging the risk of selection bias associated with this non-probability sampling method.

5. Regression model includes predictors but manuscript does not explain: whether variables entered based on p<0.25/p<0.20/p<0.05 screening • stepwise vs forced entry model. Standard epidemiologic reporting missing.

Response- We have revised the Data Processing and Analysis section (Lines 215–224) to provide the missing epidemiological details. We now explicitly state that: A p-value threshold of < 0.25 in the bivariable analysis was used for initial variable screening.

A backward stepwise elimination method was employed for the multivariable model building to identify independent predictors while controlling for confounders.

6. Multicollinearity assessment not reported. Expected reporting:VIF values ,tolerance values, Hosmer–Lemeshow test, pseudo-R² missing.

Response- We have updated the manuscript to include comprehensive diagnostic reporting for all multivariable logistic regression models. These additions ensure the statistical validity and reliability of our findings:

Multicollinearity: We have now reported the Variance Inflation Factor (VIF) values to confirm the absence of significant collinearity. All VIF values were well below the threshold of 10 (HSS Max VIF = 1.836; SSS Max VIF = 1.252).

Model Fitness: We have included the results of the Hosmer–Lemeshow test for each model to demonstrate adequate goodness-of-fit.

Explanatory Power: We have added the Nagelkerke R-square ($Pseudo-R^2$) and overall classification accuracy (e.g., 80.3% for the SSS knowledge model) to provide a clearer picture of the models' predictive utility.

6. In table 5, Why 5th year was used as reference?. It should be 1st. In table 6, 0.00 was reported in the academic year. It should be 0.001*

Response- As requested, we have recalculated the associations in Table 5 using the 2nd Year as the reference category. This adjustment provides a more intuitive interpretation of how students' attitudes shift as they progress through their academic program. While the odds of having a good attitude were higher in the 5th year compared to the 2nd year (COR = 2.46), the result remained statistically non-significant (p = 0.06). We have updated Table 5 and the corresponding text (Lines [Insert Line #]) to reflect these new values.

7. Vaccination rate discussion insufficient: Vaccination rates extremely low:• 18.2% • 15.2%

But manuscript does not discuss: vaccine availability , • national rollout status • cost barriers or policy context.

Response - We thank the reviewer for this insightful comment. We have significantly expanded the Discussion section (Lines [Insert Line #s]) to provide a multi-layered analysis of the low vaccination rates (15.2%–18.2%):

Policy Context: We now discuss the findings within the framework of Ethiopia’s National Cancer Control Plan (2025–2029) and the WHO "90-70-90" global targets.

Target Group Mismatch: We have clarified that Ethiopia’s National Expanded Program on Immunization primarily targets 9–14-year-olds. University students represent a "missed cohort" who are not prioritized in routine campaigns.

Systemic Barriers: We have added a discussion on logistical hurdles, including inconsistent supply, cold-chain requirements, and the financial barriers faced by young adults who must access the vaccine outside of school-based programs.

National Rollout Status: We have updated the text to reflect Ethiopia’s recent transition to a single-dose schedule and how actual uptake in higher education settings lags behind national goals for younger cohorts.

8. Literature comparison limited

Discussion lacks:• regional comparison (Africa / Asia) • LMIC HPV vaccination studies • university-level interventions evidence.

Response- We have significantly expanded the Discussion section (Lines 426 to 436) to provide regional and global context. Specifically, we have added comparisons with study findings from Nigeria (Reference 26), India (Reference 27), and Malaysia (Reference 28). These additions highlight that the low vaccination uptake and "catch-up gap" observed among our students are consistent with challenges faced by university populations across other LMICs in Africa and Asia.

9. Over-interpretation risk; Study claims implications for: achieving Ethiopia’s 90-70-90 targets However: Cross-sectional KAP studies cannot evaluate progress toward elimination targets. This should be softened.

Response- We agree with the reviewer that a cross-sectional study has inherent limitations in evaluating progress toward long-term global targets. We have revised the language in the Discussion and Conclusion (Lines 448 to 453) to "soften" these claims. We now state that our findings inform the challenges and identify barriers to reaching the 90-70-90 targets, rather than directly evaluating Ethiopia's progress toward them.

Attachment

Submitted filename: 1 Author respons.docx

pone.0359838.s004.docx (35.7KB, docx)

Decision Letter 1

Mengistu Zenebe

14 Aug 2026

Dear Dr. malkamu,

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Reviewers' comments:

Reviewer's Responses to Questions

Comments to the Author

Reviewer #2: All comments have been addressed

Reviewer #3: (No Response)

Reviewer #4: All comments have been addressed

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2. Is the manuscript technically sound, and do the data support the conclusions??>

Reviewer #2: Yes

Reviewer #3: Yes

Reviewer #4: Partly

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3. Has the statistical analysis been performed appropriately and rigorously? -->?>

Reviewer #2: Yes

Reviewer #3: Yes

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Reviewer #3:  Manuscript: Knowledge, Attitudes, and Prevention Practices Regarding Human Papillomavirus Among Health and Social Science Female Students in Northwest Ethiopia: A Comparative Cross-Sectional Study

Manuscript ID: PONE-D-26-09491R1

Overall Assessment

This manuscript addresses an important public health issue by comparing HPV-related knowledge, attitudes, and prevention practices among female health science and social science students. The relatively large sample, inclusion of two academic groups, and focus on HPV vaccination and cervical cancer prevention are notable strengths. The findings are relevant for university health education and may contribute useful evidence from Northwest Ethiopia. The manuscript is generally suitable for publication after minor revisions aimed primarily at improving clarity, consistency, and reporting.

Title and Abstract

The title is clear and appropriately reflects the study design and population. Minor editing is needed for capitalization and consistency, particularly “comparative cross-sectional study.” In the abstract, the word “prospective” should be removed because the study is cross-sectional. The authors should also report the response rate and ensure that all abbreviations, including HSS and SSS, are defined at first use. The conclusion should remain closely aligned with the observational findings and avoid implying that the proposed educational interventions were tested.

Introduction

The introduction provides an adequate overview of HPV, cervical cancer prevention, vaccination, and the importance of university students as a target population. The use of the Health Belief Model strengthens the conceptual foundation. However, the authors should briefly clarify how the model informed questionnaire development or interpretation. The term “multicentre” should be replaced because the study was conducted at one university. The final paragraph would benefit from a concise statement of the primary comparative objective and the expected difference between the two academic groups.

Methods

The study design, setting, sample, and data-collection period are generally described clearly. Minor clarification is required regarding the sampling procedure because both simple random sampling and convenience sampling are mentioned. The authors should revise this section to provide one consistent account of how participants were selected within each college and department.

The questionnaire description should include the number of items in each knowledge, attitude, and practice domain, the possible score ranges, and any reliability coefficients obtained during pretesting. The 50% cutoff used to define good and poor knowledge and attitude should be supported with a reference or brief justification.

The definition of “practice” is based primarily on completion of the two-dose HPV vaccination schedule. The authors should therefore consider using the more precise term “vaccination practice” or “HPV vaccine uptake” throughout the manuscript. The wording regarding inter-rater reliability should also be clarified because the questionnaire was self-administered.

The ethics information must be harmonized. The manuscript and submission form report different protocol numbers and approval dates. The correct approval details should be verified and presented consistently.

Results

The results are informative and clearly demonstrate higher HPV awareness and more positive attitudes among health science students, while vaccination completion remained low in both groups. Tables are generally understandable, but several minor revisions are needed.

The authors should add the relevant chi-square test results and exact p values for comparisons between health and social science students. In the regression tables, p = 0.00 should be reported as p < .001. Exact p values should be provided for borderline findings rather than using p = .05. Wide confidence intervals should be acknowledged as indicating imprecision.

The denominators used for the sources-of-information percentages in Table 2 should be checked and clearly stated for each academic group. Table titles should also accurately refer to both health and social science students where both groups are presented.

Discussion

The discussion appropriately interprets the greater awareness and more positive attitudes among health science students and the persistently low vaccination uptake in both groups. Comparison with previous Ethiopian and international studies is relevant. The authors should slightly reduce repetition and clearly distinguish awareness, knowledge, attitudes, and vaccination practice.

Explanations related to curriculum exposure, social media use, access, and vaccine availability should be framed as possible interpretations rather than confirmed causes. The implications section may retain recommendations for discipline-specific education, but these should be presented as recommendations arising from the findings rather than proven interventions.

The limitations section should briefly acknowledge the single-university setting, cross-sectional design, self-reported data, possible recall bias, and limited generalizability.

Recommendation

Minor revision. The manuscript is relevant, adequately designed, and potentially publishable. The required revisions are mainly related to reporting consistency, clarification of sampling and measurement procedures, correction of ethics details, improved statistical presentation, data-availability compliance, and language editing.

Reviewer #4:  Re-Review Report

Manuscript Title: Knowledge, Attitudes, and Prevention Practices Regarding Human Papillomavirus Among Health and Social Science Female Students in Northwest Ethiopia: A Comparative Cross-sectional Study

Manuscript Number: PONE-D-26-09491R1

1. Overall Assessment

The authors have provided a comprehensive and diligent response to the reviewers' and Academic Editor's comments. The revised manuscript demonstrates substantial improvements in methodological transparency, statistical rigor, and interpretive caution. The authors have addressed nearly all major concerns raised, including correcting the study design terminology, resolving sampling inconsistencies, standardizing outcome definitions, and providing robust statistical diagnostics.

However, several critical issues remain unresolved in the manuscript text itself, despite being acknowledged in the response letter. These issues pertain to sampling methodology, data availability, and table formatting. While the authors have stated their intention to make these corrections, the revised manuscript file does not consistently reflect these changes. Therefore, I recommend Major Revision to allow the authors to ensure that all promised revisions are fully implemented in the manuscript text.

2. Evaluation of Response to Specific Criticisms

The authors' response to the reviewers' comments was thorough and addressed most points substantively. The following is a summary of key improvements and remaining issues:

Addressed Issues

Issue Resolution

Study Design Terminology Removed "prospective" throughout; now consistently describes as "comparative cross-sectional"

Health Belief Model Removed theoretical framing as HBM constructs were not operationalized

Outcome Definitions Standardized "practice" as "at least one dose"; provided justification for 50% cut-off citing modified Bloom's criteria and Mekonnen et al. 2024

Statistical Reporting Added variable selection criteria (p<0.25), backward stepwise elimination, VIF values, Hosmer-Lemeshow test results, Nagelkerke R², and classification accuracy

Interpretation Toned down causal language; replaced "knowledge decay" and "window of disengagement" with descriptive phrasing; softened claims regarding 90-70-90 targets

Discussion Context Expanded with regional comparisons (Nigeria, India, Malaysia), policy context, and Ethiopian national data (PMA 2025, meta-analysis 2023)

Language Manuscript has undergone professional English editing

References Reformatted to PLOS ONE (Vancouver) style

3. Critical Unresolved Issues

Issue 1: Sampling Methodology - Inconsistent Implementation

Problem: The authors' response letter states they have revised the sampling section to reflect quota-based convenience sampling. However, the revised manuscript text (Lines 117-125 in the PDF) contains both the corrected text AND remnants of the original multi-stage sampling description. Specifically:

• The Methods section still contains the sentence: "The study utilized a multi-stage sampling procedure. First, the College of Health Sciences and the College of Social Sciences and Humanities were purposively selected... Second... selected using a simple random sampling technique (SRS)."

• This directly contradicts the authors' stated revision to use quota-based convenience sampling.

Required Action: The authors must remove all remaining references to multi-stage and random sampling from the manuscript text. The sampling description should be clean and consistent, describing only the quota-based convenience sampling approach with the two-stage process (purposive college selection followed by proportional allocation across departments). The Limitations section must explicitly acknowledge selection bias associated with this non-probability sampling method.

Issue 2: Data Availability Statement - Not Compliant

Problem: The Data Availability Statement in the manuscript (Line 503) still reads: "Data available on request from the authors." This does not comply with PLOS ONE's policy requiring data to be fully available without restriction.

Response Letter Claim: The authors state they have "provided all relevant raw data as Supporting Information files" (S1 Data and S2 Data).

Required Action: The Data Availability Statement in the manuscript must be updated to clearly state that all relevant data are included as Supporting Information files, not "available on request." The current text should be replaced with something like: "All relevant data supporting the conclusions of this study are included as Supporting Information files (S1 Data: Health Science Students and S2 Data: Social Science Students)."

Issue 3: Table Formatting and Clarity Issues

Problem: Several tables in the revised manuscript remain poorly formatted and difficult to interpret:

Table Issue

Table 4 Formatting is inconsistent; some cells contain merged text (e.g., "04.7704" appears to be a formatting error for "0.7704"); confidence intervals are unclear or malformed

Table 5 The reference category was changed from 5th year to 2nd year in the response, but the table text still contains confusing formatting with multiple OR values and inconsistent p-values

Table 6 Contains "0.3504*" with no corresponding footnote explaining the asterisk; "13.5039" appears as a malformed OR value; some cells contain merged text (e.g., "0.9043 (0.4803-19.68+)")

Table 7 Formatting is acceptable but some OR values appear unusual (e.g., "0.2798 (0.7784-24.105)" - OR < 1 but CI > 1 suggests potential data issues)

Required Action: All tables must be carefully reformatted for clarity and consistency. Specific requirements:

a) Ensure all OR/AOR values are reported with clear confidence intervals (e.g., AOR = X.XX, 95% CI: Y.YY-Z.ZZ)

b) Correct malformed numerical entries (e.g., "04.7704" should be "0.7704")

c) Add footnotes explaining all abbreviations and asterisks

d) Ensure reference categories are clearly indicated and consistent

e) Use consistent decimal places throughout

Issue 4: Incomplete Resolution of "Window of Disengagement" Terminology

Problem: The authors state in their response that they replaced "window of disengagement" with descriptive phrasing. However, the term still appears in the Discussion (Line 386): "the observed gap in later academic years window of disengagement persists" - this appears to be an incomplete edit where the original phrase was not fully removed.

Required Action: Remove the phrase "window of disengagement" completely from the manuscript text. Use descriptive phrasing throughout, such as "lower knowledge levels observed in later academic years" or "observed gaps in later academic years."

Issue 5: Inconsistent p-value Reporting

Problem: The authors acknowledged the need to correct p-values reported as "0.00" to "<0.001." However, Table 6 still contains "0.00*" in the knowledge model for the 2nd year category (p<0.001). Additionally, some p-values in tables still show "0.000" formatting.

Required Action: Ensure all p-values are reported as "<0.001" (not "0.00" or "0.000") throughout all tables and text.

Issue 6: Incorrect Reference Category Justification

Problem: The authors changed the reference category in Table 5 from 5th year to 2nd year but did not provide a clear rationale for this choice in the manuscript text. The use of 2nd year as reference is more interpretable, but this should be explicitly stated.

Required Action: Add a brief explanation in the Statistical Analysis section or table footnote justifying the choice of reference category (e.g., "2nd year was used as the reference category to provide a more intuitive interpretation of changes in attitudes as students’ progress through their academic program").

4. Minor Issues (Optional but Recommended)

Issue Recommendation

Duplicate Text in Abstract The abstract contains a duplicate Methods section (Lines 35-38 and Lines 39-41 appear to be repeated with slight variations). Remove the duplicate.

Inconsistent Use of "Social Science Students" The manuscript sometimes uses "Social Science" and other times "social science" - standardize capitalization throughout.

Table 2 Footnote Clarity The note states: "The percentages for 'Source of Information' are calculated based on the subset of participants who reported prior awareness" - this is clear, but consider adding the actual denominator values (n=280 for HSS, n=190 for SSS) to the table or footnote for transparency.

Reference 14 Citation The authors cite Mekonnen et al. 2024 for the 50% cut-off justification. Ensure this reference is correctly formatted and appears in the reference list.

5. Summary Table of Required Revisions

Priority Issue Location Required Action

Critical Sampling methodology inconsistency Methods: Sampling section Remove all remaining references to multi-stage and random sampling; ensure only quota-based convenience sampling is described

Critical Data Availability Statement End of manuscript Update statement to indicate data are included as Supporting Information files

Critical Table formatting (Table 4, 5, 6) Results section Correct malformed numerical entries; ensure consistent formatting of OR/AOR and CIs; add footnotes

Critical "Window of disengagement" term Discussion (Line 386) Remove the phrase completely and use descriptive phrasing

Critical p-value reporting Tables 4, 6 Change "0.00" to "<0.001"

Minor Duplicate text in Abstract Abstract Remove duplicate Methods paragraphs

Minor Terminology consistency Throughout Standardize capitalization of "Social Science"

Minor Reference category rationale Methods/Table 5 Add brief explanation for using 2nd year as reference

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Reviewer #2: No

Reviewer #3: No

Reviewer #4: Yes:  Mohammed Abu Sayeed, Associate Professor, Department of Pharmacy, International Islamic University Chittagong, Bangladesh

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PLoS One. 2026 Oct 5;21(10):e0359838. doi: 10.1371/journal.pone.0359838.r004

Author response to Decision Letter 2


25 Aug 2026

Author response

The authors express their sincere gratitude to the editor and reviewers for their insightful feedback and dedication to elevating the quality of this manuscript. Point-by-point responses to each of the editor's and reviewers' comments are detailed below, along with the corresponding revisions made to the manuscript.

Reviewer 3 comments and Author responses

1. Minor editing is needed for capitalization and consistency, particularly 'comparative cross‑sectional study.

Author response: We have corrected the capitalization in the title to read "Comparative Cross‑Sectional Study" as suggested.

2. In the abstract, the word 'prospective' should be removed because the study is cross‑sectional.

Author response: We have reviewed the abstract and the entire manuscript and confirm that the word "prospective" does not appear anywhere. The study design is consistently described as "cross‑sectional" throughout. No changes were needed for this comment.

3. Ensure that all abbreviations, including HSS and SSS, are defined at first use.

Author Response: We confirm that HSS (Health Science Students) and SSS (Social Science Students) are already defined at first use in the abstract (lines 42 and 43). No changes were required.

4. The conclusion should remain closely aligned with the observational findings and avoid implying that the proposed educational interventions were tested.

Author response: We have revised the conclusion to more clearly frame recommendations as implications of the observational findings, rather than implying that interventions were tested. The revised text now states: "Based on our observational findings, we recommend..."

5. Briefly clarify how the model informed questionnaire development or interpretation.

Author response: We have clarified in the Introduction (lines 77‑78) that the study was guided by a comparative empirical framework and did not impose a specific behavioral theory. The HBM was therefore not used to inform questionnaire development.

6. The term 'multicentre' should be replaced because the study was conducted at one university."

Author response: We have replaced the term "multicenter" with "comparative" in line 86, as the study was conducted at a single university (Debre Tabor University).

7. The final paragraph would benefit from a concise statement of the primary comparative objective and the expected difference between the two academic groups.

Author response: We have added a concise statement of the expected difference between groups to the final paragraph of the Introduction (lines 90‑92), stating that we hypothesized Health Science students would have higher knowledge and more favorable attitudes due to curriculum exposure.

8. Clarification is required regarding the sampling procedure because both simple random sampling and convenience sampling are mentioned.

Author response: We confirm that the sampling procedure is consistently described as "non‑probability quota‑based convenience sampling" and "purposive selection" of colleges. No mention of simple random sampling appears in the manuscript. No changes were required.

9. The questionnaire description should include the number of items in each domain, the possible score ranges, and reliability coefficients.

Author response: We thank the reviewer for this valuable suggestion. We have expanded the questionnaire description in the Methods section to specify the number of items and possible score ranges for each domain. Additionally, we have now calculated and reported Cronbach's alpha coefficients to assess internal consistency for both Health Science and Social Science student cohorts.

For the knowledge domain (14 items), Cronbach's alpha was 0.930 in both Health Science and Social Science students, indicating excellent internal consistency. For the attitude domain (5 items), Cronbach's alpha was 0.762 in both groups, indicating acceptable reliability. Corrected item-total correlations for all items exceeded 0.30, confirming that each item contributed meaningfully to its respective scale.

As the practice domain was measured as a single binary outcome (vaccination status: yes/no), Cronbach's alpha was not applicable for that domain. These reliability statistics have been added to the Data Quality Control section of the manuscript.

10. The 50% cut‑off used to define good and poor knowledge and attitude should be supported with a reference or brief justification.

Author response: We have expanded the justification for the 50% cut‑off in the Operational Definitions section (lines 154‑155) to reference modified Bloom's criteria and prior Ethiopian studies.

11. The definition of 'practice' is based primarily on completion of the HPV vaccination schedule. Consider using the more precise term 'vaccination practice' or 'HPV vaccine uptake'.

Author response: We have revised the terminology throughout the manuscript to use "vaccination practice" or "HPV vaccine uptake" where appropriate, and have updated Table 3 and the Abstract accordingly.

12. The wording regarding inter‑rater reliability should also be clarified because the questionnaire was self‑administered.

Author response: We have clarified that the inter‑rater reliability checks were conducted on the data abstraction process, not on the self‑administered questionnaire itself (lines 179).

13. The manuscript and submission form report different protocol numbers and approval dates. Verify and present consistently.

Author response: We have verified the ethics protocol number and approval date against the official approval letter. The manuscript now consistently reports protocol number 017/2024 (July 20, 2024), matching the submission form.

14. Add the relevant chi‑square test results and exact p‑values for comparisons between health and social science students.

Author response: We thank the reviewer for this valuable suggestion. To address this, we created a grouping variable (academic_discipline) in both datasets before merging (1 = Health Science, 2 = Social Science). Using the combined dataset (N=670), we performed Pearson's chi-square tests to formally compare the two groups across all key outcomes. The results, now added to the Results section (lines 240-245), show:

HPV knowledge (good knowledge): χ² = 31.61, df = 1, p < 0.001

Attitude towards HPV vaccination (good attitude): χ² = 26.07, df = 1, p < 0.001

Vaccination practice (good practice): χ² = 1.07, df = 1, p = 0.300

These formal comparisons confirm that Health Science students have significantly higher knowledge and more favorable attitudes compared to Social Science students, while vaccination practice does not differ significantly between the two groups. The non-significant practice finding aligns with the low overall vaccination rates observed in both groups (18.2% vs. 15.2%).

15. In the regression tables, p = 0.00 should be reported as p < .001.

Author Response: All p‑values previously reported as "0.00" have been corrected to "<0.001" in accordance with standard reporting guidelines.

16. Wide confidence intervals should be acknowledged as indicating imprecision.

Author Response: We have already acknowledged the wide confidence intervals in the Results section (lines 257‑260) and noted that these estimates should be interpreted with caution. No additional changes were required.

17. The denominators used for the sources‑of‑information percentages in Table 2 should be checked and clearly stated for each academic group.

Author Response: We confirm that the denominators for the sources‑of‑information percentages in Table 2 are already clearly stated in the footnote (n=280 for HSS and n=190 for SSS). No changes were required.

18. Clearly distinguish awareness, knowledge, attitudes, and vaccination practice.

Author Response: We confirm that awareness, knowledge, attitudes, and vaccination practice are already clearly defined and distinguished in the Operational Definitions section (lines 150‑162) and are used consistently throughout the manuscript. No changes were required.

19. Explanations related to curriculum exposure, social media use, access, and vaccine availability should be framed as possible interpretations rather than confirmed causes.

Author Response: We have reviewed the Discussion and replaced definitive causal language with more cautious phrasing, using qualifiers such as "may," "likely," and "suggests" to frame explanations as possible interpretations rather than confirmed causes.

Reviewer 4 comments and author responses.

1. The Methods section contains remnants of the original multi‑stage sampling description. Remove all remaining references to multi‑stage and random sampling.

Author Response: We have reviewed the Sampling section and confirm that it consistently describes "non‑probability quota‑based convenience sampling" and "purposive selection" of colleges. No references to multi‑stage or random sampling remain in the manuscript. No changes were required for this comment.

2. The Data Availability Statement is not compliant with PLOS ONE policy. Update to indicate data are included as Supporting Information files.

Author Response: We confirm that the Data Availability Statement already states that all relevant data are included as Supporting Information files (Line 528-530 - All relevant data supporting the conclusions of this study are included as Supporting Information files (S1 Data: Health Science Students and S2 Data: Social Science Students), in compliance with PLOS ONE policy. No changes were required.

3. Tables 4, 5, and 6 are poorly formatted with malformed numerical entries. Correct all

Author Response: We have carefully reviewed Tables 4, 5, and 6 and corrected any formatting inconsistencies. All Adjusted Odds Ratios are now reported to two decimal places, confidence intervals are formatted consistently, and p‑values are presented as <0.001 where appropriate. Footnotes explaining abbreviations have been added.

4. The phrase 'window of disengagement' still appears in the Discussion. Remove it completely.

Author Response: We have removed the phrase "window of disengagement" from the manuscript (line 94) and replaced it with descriptive wording. We have also corrected the duplicate phrase in line 366 to "creating an observed gap in later academic years.

5. Table 6 still contains '0.00' – change to '<0.001'. Also ensure all p‑values are consistent.

Author Response: We have reviewed all regression tables and confirmed that p‑values are now consistently reported as <0.001 where appropriate. No instances of 0.00 or 0.000 remain.

6. Add a brief explanation for using 2nd year as the reference category in Table 5.

Author Response: We have added a brief explanation in the Statistical Analysis section (lines 284‑286) justifying the use of 2nd year as the reference category for academic year in Table 5. "For multivariable logistic regression, the reference category for academic year was set to 2nd year to provide a more intuitive interpretation of changes in attitudes and practices as students’ progress through their academic program."

7. The abstract contains a duplicate Methods section. Remove the duplicate.

Author response: We have reviewed the Abstract and confirm that there is no duplicate Methods section. The abstract follows a standard structure (Background, Objective, Methods, Results, Conclusion). No changes were required.

8. Standardize capitalization of 'Social Science' throughout.

Author response: We have standardized the capitalization of "Social Science" throughout the manuscript to ensure consistency.

9. Add actual denominator values (n=280 for HSS, n=190 for SSS) to Table 2 footnote.

Author response: We confirm that the denominators (n=280 for HSS and n=190 for SSS) are already clearly stated in the Table 2 footnote (Note: The percentages for 'Source of Information' are calculated based on the subset of participants who reported prior awareness of HPV (n=280 for Health Science and n=190 for Social Science). This explains the variation in denominators compared to the total sample size (N=670). No changes were required.

Attachment

Submitted filename: 2_Author response.docx

pone.0359838.s006.docx (23.2KB, docx)

Decision Letter 2

Mengistu Zenebe

21 Sep 2026

<p>Knowledge, Attitudes, and Prevention Practices Regarding Human Papillomavirus Among Health and Social Science Female Students in Northwest Ethiopia: A Comparative cross-sectional Study

PONE-D-26-09491R2

Dear Author,

We’re pleased to inform you that your manuscript has been judged scientifically suitable for publication and will be formally accepted for publication once it meets all outstanding technical requirements.

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Academic Editor

PLOS One

Additional Editor Comments (optional):

Reviewers' comments:

Reviewer's Responses to Questions

Comments to the Author

Reviewer #2: (No Response)

Reviewer #3: All comments have been addressed

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2. Is the manuscript technically sound, and do the data support the conclusions??>

Reviewer #2: Partly

Reviewer #3: Yes

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Reviewer #2: Yes

Reviewer #3: No

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The PLOS Data policy

Reviewer #2: Yes

Reviewer #3: Yes

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5. Is the manuscript presented in an intelligible fashion and written in standard English??>

Reviewer #2: Yes

Reviewer #3: Yes

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Reviewer #2: 1. The reference category for academic year is inconsistent between Table 5 and the accompanying note. The table appears to use fifth year as the reference category, whereas the note states that second year was used as the reference. Please verify the regression coding and revise the table, text, and footnote to ensure complete consistency.

2. Several regression estimates, particularly for prior HPV awareness and academic department, have wide confidence intervals. The authors should report the underlying cell frequencies and assess whether sparse data or separation may have contributed to the instability of the estimates.

3. In table 6, Heard about HPV p value was unnecessarily reported as bold format

Reviewer #3: The authors have satisfactorily addressed the reviewers’ comments and substantially improved the manuscript’s methodological clarity, statistical reporting, presentation of results, and interpretation of findings. The revisions are appropriate, and the manuscript is now suitable for publication. I have no further substantive concerns and recommend acceptance in its present form.

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Reviewer #2: Yes:  Mohammad Injamul Hoq

Reviewer #3: No

**********

Attachment

Submitted filename: PLOS_Review.pdf

pone.0359838.s005.pdf (19.5KB, pdf)

Acceptance letter

Mengistu Zenebe

PONE-D-26-09491R2

PLOS One

Dear Dr. malkamu,

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on behalf of

Dr. Mengistu Hailemariam Zenebe

Academic Editor

PLOS One

Associated Data

    This section collects any data citations, data availability statements, or supplementary materials included in this article.

    Supplementary Materials

    S1 Data. De-identified dataset for Health Science students (n = 335).

    This SPSS file contains the raw data used for the comparative analysis of HPV knowledge, attitudes, and prevention practices, including socio-demographic characteristics, awareness, knowledge scores, attitude scores, and vaccination status.

    (SAV)

    pone.0359838.s001.sav (24.9KB, sav)
    S2 Data. De-identified dataset for Social Science students (n = 335).

    This SPSS file contains the raw data used for the comparative analysis of HPV knowledge, attitudes, and prevention practices, including socio-demographic characteristics, awareness, knowledge scores, attitude scores, and vaccination status.

    (SAV)

    pone.0359838.s002.sav (24.8KB, sav)
    Attachment

    Submitted filename: 1 Author respons.docx

    pone.0359838.s004.docx (35.7KB, docx)
    Attachment

    Submitted filename: 2_Author response.docx

    pone.0359838.s006.docx (23.2KB, docx)
    Attachment

    Submitted filename: PLOS_Review.pdf

    pone.0359838.s005.pdf (19.5KB, pdf)

    Data Availability Statement

    All relevant data are within the paper and its Supporting information files.


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