Factors Associated With Psychological Outcomes Among Vaccinated and Unvaccinated Health Care Workers Against COVID-19 Infection in Bangladesh

Md Dhedharul Alam; Sujan Kumer Paul; Mahmuda Momi; Li Ni; Yi Xu

doi:10.3389/fmed.2022.852922

. 2022 Mar 24;9:852922. doi: 10.3389/fmed.2022.852922

Factors Associated With Psychological Outcomes Among Vaccinated and Unvaccinated Health Care Workers Against COVID-19 Infection in Bangladesh

Md Dhedharul Alam ^1,², Sujan Kumer Paul ³, Mahmuda Momi ⁴, Li Ni ⁵, Yi Xu ^1,^2,^*

PMCID: PMC8988188 PMID: 35402432

Abstract

Background

Vaccination of healthcare workers (HCWs) is recommended during the COVID-19 pandemic to reduce the risk of infection for themselves and their patients, as well as to encourage their patients to get immunized. The present study aimed to investigate the psychological outcomes and associated factors among vaccinated and unvaccinated HCWs against COVID-19 infection in Bangladesh.

Methods

From March to August 2021, an online nationwide survey was conducted with a total of 2,038 Bangladeshi HCWs. The frequency of symptoms of general health problems, depression, anxiety, stress, post-traumatic stress disorder, insomnia, and loneliness was assessed using the Bangla versions of the GHQ-12, PHQ-2, GAD-2, PSS-4, PC-PTSD-5, ISI, and UCLA-LS scales, respectively.

Results

Compared with unvaccinated HCWs (n = 1,058), vaccinated HCWs (n = 980) had a statistically significant lower prevalence of general health problems (16.7 vs. 59.1%), depression (15.6 vs. 31.9%), post-traumatic stress disorder (22.3 vs. 30.8%), insomnia (23.8 vs. 64.9%), and loneliness symptoms (13.9 vs. 21.8%). Among vaccinated HCWs, females were significantly associated with a higher risk of symptoms of general health problems (AOR, 2.71; 95% CI, 0.97–7.60), anxiety (AOR, 2.17; 95% CI, 1.14–4.13), and loneliness (AOR, 2.52; 95% CI, 1.11–5.73). Except for anxiety and post-traumatic stress disorder symptoms, participants living in urban areas had a significantly lower risk of all psychological outcomes (e.g., depression: AOR, 0.43; 95% CI, 0.27–0.67; stress: AOR, 0.64; 95% CI, 0.47–0.88). Respondents who were married were significantly less likely to experience symptoms of general health problems (AOR, 0.10; 95% CI, 0.02–0.39), depression (AOR, 0.31; 95% CI, 0.22–0.82), insomnia (AOR, 0.46; 95% CI, 0.20–1.03), and loneliness (AOR, 0.31; 95% CI, 0.10-0.92). Participants who worked as doctors were significantly less chance of experiencing symptoms of general health problems (AOR, 0.18; 95% CI, 0.08–0.37), depression (AOR, 0.51; 95% CI, 0.30–0.87), and anxiety (AOR, 0.54; 95% CI, 0.37–0.78). On the other hand, unvaccinated HCWs who were 18–29 years old and had <5 years of work experience were significantly associated with a higher risk of all psychological outcomes except anxiety and insomnia symptoms (e.g., depression among 18–29 years old: AOR, 1.83; 95% CI, 0.27–2.60; stress among those with <5 years of work experience: AOR, 2.37; 95% CI, 0.93–6.07). Participants who worked as nurses were significantly more likely to suffer from depression (AOR, 1.44; 95% CI, 0.84–2.46), anxiety (AOR, 1.42; 95% CI, 0.24–1.73), and stress (AOR, 1.55; 95% CI, 0.31–0.89) symptoms. Except for anxiety and stress symptoms, respondents who worked as frontline workers and provided direct care to infected patients were the significantly higher chance of experiencing all psychological outcomes (e.g., depression among who worked as frontline workers: AOR, 2.41; 95% CI, 0.23–3.73; insomnia among those who provide direct care to infected patients: AOR, 2.60; 95% CI, 0.34–3.06). Participants who were infected with COVID-19 had a significantly less chance of experiencing symptoms of general health problems (AOR, 0.89; 95% CI, 0.65–1.22), depression (AOR, 0.66; 95% CI, 0.48–0.92), and anxiety (AOR, 0.63; 95% CI, 0.46–0.87).

Conclusions

To control the infection and improve psychological outcomes, this study suggests emphasizing the vaccinated to unvaccinated HCWs as soon as possible. They also required special attention, health-related education, and psychological support.

Keywords: Bangladesh, COVID-19, health care workers, immunization, psychological outcomes, refusal, uptake

Introduction

The Coronavirus Disease 2019 (COVID-19) has now spread throughout the world. Since the commencement of the COVID-19 pandemic in 2019, around 225 countries and 215.7 million people have been afflicted with the virus, which has killed about 4.4 million people (as of August 29, 2021) (1). This unprecedented global epidemic poses a severe challenge to local healthcare systems, with a growing number of daily cases and death counts related to COVID-19. Healthcare workers (HCWs) are more vulnerable to COVID-19 than the general population, particularly those exposed to suspected and confirmed cases, due to the high risk of infection, insufficient protection and disease management experience, heavy workload, substantial lifestyle adjustments, quarantine, and lower social support (2–4). These variables raise the risk of psychological issues among HCWs, including depression, anxiety, insomnia, fear, and suicide, all of which can have a severe impact on work productivity and long-term well-being (5–7).

However, Sanghera et al. (8) conducted a meta-analysis of 44 studies involving 69,499 HCWs, reporting high rates of indications of depression (13.5–44.7%), anxiety (12.3–35.6%), stress (5.2–32.9%), post-traumatic stress disorder (7.4–37.4%), insomnia (33.8–36.1%) and burnout (3.1–43.0%) among HCWs during the COVID-19 outbreak. Another meta-analysis of the effects of SARS, MARS, and COVID-19 on HCWs' physical and mental health found that general health concerns (62.5%), depression (26.3%), anxiety (29.0%), post-traumatic stress disorder (20.7%), insomnia (37.9%), psychological distress (37.8%), fear (43.7%), burnout (34.4%), somatization (16.1%), and stigmatization feelings (14.0%) (9). Bangladesh, where the current study was done, is a South Asian country where COVID-19 has significantly impacted its healthcare system (10). The first COVID-19 case was reported in Bangladesh on March 8, 2020 (11), and as of August 31, 2021, the country had 1.4 million verified COVID-19 cases and 26,195 deaths (12). Bangladesh reported the first death on April 15, 2020, and a nurse on May 30, 2020. Approximately 9,394 healthcare providers had been infected with the virus on August 29, 2021, with 186 of them dying (Supplementary Figures 1, 2) (13, 14). A study examining the impact of the COVID-19 pandemic on Bangladeshi HCWs found that the prevalence of depression, anxiety, insomnia, and loneliness among HCWs were 44, 78, 89, and 87%, respectively (15).

Vaccines are one of the most effective strategies for preventing COVID-19 infection, as well as its consequences and complications (16). Since the first COVID-19 vaccination human clinical trial began on March 3, 2020 (17), 33 vaccines had progressed to stage 3 clinical trials, with 22 vaccines approved in 192 countries by August 31, 2021 (18). More than 5 billion doses of the vaccine were already administered globally as of August 31, 2021 (1). On January 27, 2021, Bangladesh began providing COVID-19 vaccines, with bulk vaccination starting on February 7, 2021, and the second dosage starting on April 8, 2021 (19). As of August 31, 2021, the number of first doses administered in Bangladesh is 18,489,742, and the number of second doses administered is 8,045,469 (Supplementary Figure 3) (12). Ideally, a high enough percentage of the population will be immunized, safeguarding those who aren't, a process known as “herd immunity.” It has been estimated between 55 to 82% of populations would need to be vaccinated to reach herd immunity for COVID-19, depending on varying biological, environmental, socio-behavioral factors and infection rates within each country (20).

Given the significant increase in anxiety and depressive symptoms linked to the COVID-19 pandemic's stress (21), it is plausible to believe that vaccination could lead to reduced anxiety and depressive symptoms. However, it is not known whether the psychological status would be affected after COVID-19 vaccination. One study showed that COVID-19 vaccination could positively correlate with COVID-19-related anxiety and fears among 1,779 adults in Germany (22), while another study indicated that psychological stress levels after getting vaccinated significantly decreased among the public in China (23). In addition, a cross-sectional survey of 363 HCWs in Turkey indicated that COVID-19 vaccination was not linked to secondary traumatic stress, anxiety, and depression symptoms among HCWs (24). As a result, it's critical to look into how this COVID-19 immunization affects mental health, particularly among HCWs. However, there have been no studies on the psychological outcomes of COVID-19 vaccination on both vaccinated and unvaccinated HCWs in Bangladesh yet. Therefore, we conducted a cross-sectional survey to assess the factors associated with psychological outcomes among vaccinated and unvaccinated HCWs against SARS-CoV-2 infection in Bangladesh. This study looked into the prevalence of general health problems, depression, anxiety, stress, post-traumatic stress disorder, insomnia, and loneliness among vaccinated and unvaccinated HCWs against SARS-CoV-2 infection in Bangladesh and explored its contributing factors.

Based on these considerations, this study had three objectives. First, we sought to determine the prevalence of general health problems, depression, anxiety, stress, post-traumatic stress disorder, insomnia, and loneliness among vaccinated and unvaccinated HCWs against SARS-CoV-2 infection in Bangladesh. Second, we sought to identify a difference in the prevalence of general health problems, depression, anxiety, stress, post-traumatic stress disorder, insomnia, and loneliness symptoms among vaccinated and unvaccinated HCWs in Bangladesh. Third, we sought to explore which socio-demographic and clinical factors could significantly predict psychological outcomes in the group of vaccinated and unvaccinated HCWs against SARS-CoV-2 infection in Bangladesh. Based on these objectives, we hypothesized that vaccinated HCWs had a lower prevalence of psychological outcomes against SARS-CoV-2 infection in Bangladesh than unvaccinated HCWs. This research will add to our understanding of SARS-CoV-2 vaccination and mental health and assist governments and policymakers in developing an effective vaccine campaign to achieve vaccination coverage and herd immunity among HCWs and the public during the SARS-CoV-2 outbreak.

Materials and Methods

Study Design

The study was approved by the Institutional Ethical Review Board (IERB) of the Holy Family Red Crescent Medical College and Hospital, Dhaka, Bangladesh (Approval No: IERB/36) and the Ethics Committee of the First Affiliated Hospital, Zhejiang University School of Medicine before it began. Before the participants started the questionnaire, they had to give their informed consent online. Between March and August of 2021, a cross-sectional online study was administered. The data was obtained online using Google Forms and the Bangla language. The two research assistants sent the survey link by e-mail, Facebook, Viber, WhatsApp, Imo, and other social media platforms. They were invited to fill out the form and share the link with their networks to reach more people. They used the convenient and snowball method to circulate the survey link throughout their professional and social networks. Participants were told that taking part in the study was completely voluntary, and they were urged to share the survey link with their friends or acquaintances once it was completed. All participants were assured of their data's privacy and confidentiality, as well as information on the study's goal, protocol, and their right to have their data removed at any time. The current study received a total of 2,067 responses at the onset. After screening, 29 responses were eliminated due to missing information, not being fully vaccinated, and being outside of Bangladesh. Finally, responses from 2,038 HCWs were included in this study. Nine hundred and eighty HCWs had been vaccinated, and 1,058 had not. Vaccinated means they had fully dose vaccinated. The following were the criteria for inclusion: (1) be at least 18 years old, (2) living in Bangladesh at the time of the COVID-19, (3) willingness to engage in this study via online informed consent, (4) completion of the whole questionnaire, and (5) no history of mental health problems.

Participants

The sample size was calculated using OpenEpi software. A previous study on the SARS-CoV-2 outbreak in Bangladesh found that 50% of HCWs had psychological problems (25). This 50% proportion would provide maximum variance and sample size. At 95% confidence level, 80% power, and 1.5 design effect, we arrived at the sample size of 576. The current study inflated our sample by 10% to account for non-response data, so the final sample size required was 634 participants for each group.

Measurements

Demographic Information

The participant's sex (male, female, or not interested), age (18–29, 30–39, 40–49, or 50 years), residence (urban and rural), the status of marriage, whether or not they had children, and educational level were self-reported demographic information. Participants were also asked working position (doctor, nurse, medical technician, hospital workers or other), work types (frontline or second-line), employment titles (senior, intermediate, junior, new or other), work experiences (≤5, 6-10, 11–19, or ≥20 years), socioeconomic status (lower, middle or upper class), living with family, and smoking habit. In addition, this study also investigated whether participants had provided direct care to infected patients, whether they had been infected with COVID-19, whether anyone in their family, friends, or colleagues had been infected with COVID-19, and whether anyone in their family, friends, or colleagues had died from COVID-19.

General Health Questionnaire

The 12-item validated Bangla version of the General Health Questionnaire (GHQ-12) (26, 27) evaluates mental health status on a four-point Likert scale, with “1” defining never and “4” defining frequently. For a full score of 0–12, each item can be assigned a value of 0 (if option 1 or 2) or 1 (if options 3 and 4). The overall score of ≥3 indicated that the person's mental health status was terrible. In this study, the internal consistency was α = 0.81.

Patient Health Questionnaire

The two-item validated Bangla version of the Patient Health Questionnaire (PHQ-2) (28–30) evaluates depression symptoms rated on a four-point Likert scale, with “1” defining never and '4' defining almost every day. The overall value of ≥3 is suggested to indicate a likely diagnosis of significant depression. In this study, the internal consistency was α = 0.76.

Generalized Anxiety Disorder Scale

The two-item validated Bangla version of the Generalized Anxiety Disorder scale (GAD-2) (31, 32) evaluates anxiety symptoms on a four-point Likert scale, with “1” defining never and “4” defining almost every day. The overall score of ≥3 is proposed as revealing a probable anxiety disorder diagnosis. The internal consistency was α = 0.77.

Perceived Stress Scale

The four-item validated Bangla version of the Perceived Stress Scale (PSS-4) (33–35) evaluates stress symptoms on a four-point Likert scale, with “1” defining never and “4” defining always. A quartile split was used because no official cut-off for the PSS-4 scale was available. In this study, the internal consistency was α = 0.72.

Primary Care PTSD Screen for DSM-5

The Bangla version of the Primary Care PTSD Screen for DSM-5 (PC-PTSD-5) (36) evaluates post-traumatic stress disorder symptoms over the past month by asking five binary questions about re-experiencing, avoidance, physiological reactions, emotional numbness, and trauma-distorted guilt and blame thoughts. This scale was previously used in a Bangladeshi study (37). The total score ranges from 1 to 5, with a 3 as the cut-off value. In this study, the internal consistency was α = 0.71.

Insomnia Severity Index

The seven-item validated Bangla version of the Insomnia Severity Index (ISI) (38, 39) evaluates the severity of insomnia on a five-point Likert scale, with “0” defining no problem and “4” defining a major problem. An overall score of ≥8 indicates possible insomnia symptoms in this investigation. The internal consistency was α = 0.72.

University of California, Los Angeles, Loneliness Scale

The three-item validated Bangla version of the University of California, Los Angeles, Loneliness Scale (UCLA-LS) (40, 41) evaluates loneliness symptoms on a three-point Likert scale, with “1” defining rarely and “3” defining frequently. Participants who received a score of ≥6 were considered to be lonely to a high degree. In this study, the internal consistency was α = 0.75.

Oslo Social Support Scale

The Bangla version of the three-item Oslo Social Support Scale (OSSS-3) (42) was also used to evaluate respondents' social support. The raw scores were added together to create a sum index, ranging from 3 to 14. Social support was labeled as poor, moderate, or strong based on a score of 3-8, 9-11, or 12-14. In this study, the internal consistency was α = 0.75.

The PC-PTSD-5 and OSSS-3 scales were first sent to three experts in medicine, public health, and epidemiology, who translated the English version into Bangla and then back into English to ensure internal consistency, validity, and acceptable reliability (43). The scales were then piloted with 30 potential respondents from various categories to ensure that the language in the final version was perfect. The tools used in the pilot study received no corrections or suggestions from respondents regarding the contents developed in Bangla.

Statistical Analysis

The statistical analyses were run by SPSS version 20.0, and figures were prepared in GraphPad Prism version 9. Categorical data was represented using numbers and percentages. To compare categorical variable variations between groups, Chi-square tests were used. The Kolmogorov–Smirnov test, the Shapiro–Wilk test, and normal Q-Q plots were used to determine the data's normality. The median of the interquartile range (IQR) of data from non-normal distributions was shown. When comparing non-normally distributed data between two groups, the Mann–Whitney U-test was used, and when comparing data between more than two groups, the Kruskal–Wallis-test was used. Spearman correlations were used to compare the psychological outcomes of vaccinated and unvaccinated HCWs. In addition, binary logistic regression analysis was used to look into potential predictors of psychological outcomes in both groups. The model fitness test was checked using the Hosmer and Lemeshow goodness of fit test. All of the variables were added in the univariate analysis and then the multivariate analysis only included the significant variables in the univariate analysis. For a single predictor, univariate analysis expressed as crude odds ratio (COR) was used, while multivariate analysis expressed as adjusted odds ratio (AOR) was used for multiple predictors, and all psychological outcomes were considered dependent variables. All analyses were conducted at a 95% confidence level, with p-values <0.05 considered significant.

Results

Sample Characteristics

Finally, 2,038 HCWs were enrolled in our study, with 980 (48.1%) being vaccinated and 1,058 (51.9%) being unvaccinated. The characteristics of the study respondents are shown in Table 1. Vaccinated HCWs were significantly more likely to be younger (41.8 vs. 39.3%, p < 0.01), doctors (42.9 vs. 22.3%, p < 0.01), frontline workers (62.6 vs. 47.1%, p < 0.01), junior HCWs (48.4 vs. 38.1%, p < 0.01), with <5 years of work experience (52.8 vs. 45.8%, p < 0.01), from a middle-class socioeconomic status (59.6 vs. 53.8%, p < 0.01), providing direct service to infected patients (68.6 vs. 44.0%, p < 0.01), infected with COVID-19 (45.1 vs. 23.8%, p < 0.01), and with moderate social support (57.3 vs. 34.8%, p < 0.01) than unvaccinated HCWs. On the other hand, unvaccinated HCWs were significantly more male (52.7 vs. 47.2%, p < 0.01), married (62.1 vs. 58.2%, p < 0.01), had a post-graduate degree (54.9 vs. 45.0%, p < 0.01), lived with family (70.0 vs. 51.9%, p < 0.01), had family members, friends, or colleagues infected with COVID-19 (57.8 vs. 30.6%, p < 0.01) and died from it (33.3 vs. 23.6%, p < 0.01) than vaccinated HCWs. Moreover, there were no significant differences between the vaccinated and unvaccinated HCWs in terms of residence (p = 0.41), having children (p = 0.63), and smoking habits (p = 0.25).

Table 1.

Sociodemographic characteristics in vaccinated and unvaccinated health care workers against COVID-19 infection.

Characteristics	Total (n = 2038)	Vaccinated health care workers (n = 980)	Unvaccinated health care workers (n = 1058)	p value
	No. (%)	No. (%)	No. (%)
Sex
Male	1021 (50.1)	463 (47.2)	558 (52.7)	<0.01
Female	953 (46.8)	461 (47.0)	492 (46.5)
Not interested	64 (3.1)	56 (5.7)	8 (0.8)
Age, Y
18–29	826 (40.5)	410 (41.8)	416 (39.3)	<0.01
30–39	612 (30.0)	257 (26.2)	355 (33.6)
40–49	407 (20.0)	205 (20.9)	202 (18.1)
≥50	193 (9.5)	108 (11.0)	85 (8.0)
Residence
Urban	1483 (72.8)	705 (71.9)	778 (73.5)	0.41
Rural	555 (27.2)	275 (28.1)	280 (26.5)
Marital status
Single	608 (29.8)	342 (34.9)	266 (25.1)	<0.01
Married	1227 (60.2)	570 (58.2)	657 (62.1)
Divorced/separated/widowed	203 (10.0)	68 (6.9)	135 (12.8)
Having children
Yes	1049 (51.5)	499 (50.9)	550 (52.0)	0.63
No	989 (48.5)	481 (49.1)	508 (48.0)
Education level
Bachelor (MBBS) or lower degree	625 (30.7)	338 (34.5)	287 (27.1)
Post-graduate degree	1022 (50.1)	441 (45.0)	581 (54.9)	<0.01
Doctoral degree	383 (18.8)	195 (19.9)	188 (17.8)
Other	8 (0.4)	6 (0.6)	2 (0.2)
Working position
Doctor	656 (32.2)	420 (42.9)	236 (22.3)	<0.01
Nurse	159 (7.8)	69 (7.0)	90 (8.5)
Medical technician	249 (12.2)	79 (8.1)	170 (16.1)
Hospital workers	303 (14.9)	99 (10.1)	204 (19.3)
Other	671 (32.9)	313 (31.9)	358 (33.8)
Work types
Frontline	1111 (54.5)	613 (62.6)	498 (47.1)	<0.01
Second-line	927 (45.5)	367 (37.4)	560 (52.9)
Employment titles
Senior	311 (15.3)	154 (15.7)	157 (14.8)	<0.01
Intermediate	473 (23.2)	200 (20.4)	273 (25.8)
Junior	877 (43.0)	474 (48.4)	403 (38.1)
New	366 (18.0)	143 (14.6)	223 (21.1)
Other	11 (0.5)	9 (0.9)	2 (0.2)
Work experiences, Y
≤5	1002 (49.2)	517 (52.8)	485 (45.8)	<0.01
6–10	387 (19.0)	142 (14.5)	245 (23.2)
11–19	422 (20.7)	187 (19.1)	235 (22.2)
≥20	227 (11.1)	134 (13.7)	93 (8.8)
Socio economic status
Lower class	591 (29.0)	286 (29.2)	305 (28.8)	<0.01
Middle class	1153 (56.6)	584 (59.6)	569 (53.8)
Upper class	294 (14.4)	110 (11.2)	184 (17.4)
Living with family
Yes	1250 (61.3)	509 (51.9)	741 (70.0)	<0.01
No	788 (38.7)	471 (48.1)	317 (30.0)
Smoking habit
Yes	613 (30.1)	283 (28.9)	330 (31.2)	0.25
No	1425 (69.9)	697 (71.1)	728 (68.8)
Providing direct service to infected patients
Yes	1138 (55.8)	672 (68.6)	466 (44.0)	<0.01
No	900 (44.2)	308 (31.4)	592 (56.0)
Have you been infected with COVID-19?
Yes	694 (34.1)	442 (45.1)	252 (23.8)	<0.01
No	1344 (65.9)	538 (54.9)	806 (76.2)
Have any of your family members, friends, or colleagues been infected with the COVID-19?
Yes	912 (44.7)	300 (30.6)	612 (57.8)	<0.01
No	1,126 (55.3)	680 (69.4)	446 (42.2)
Have any of your family members, friends, or colleagues died of the COVID-19?
Yes	583 (28.6)	231 (23.6)	352 (33.3)	<0.01
No	1,455 (71.4)	749 (76.4)	706 (66.7)
Social support
Poor	807 (39.6)	219 (22.3)	588 (55.6)	<0.01
Moderate	930 (45.6)	562 (57.3)	368 (34.8)
Strong	301 (14.8)	199 (20.3)	102 (9.6)

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Scores of Psychological Outcomes

When compared to unvaccinated HCWs, vaccinated HCWs had significantly lower median of the interquartile range (IQR) of scores for general health problems (2.0 [0–2.0] vs. 4.0 [2.0–6.0]; p < 0.01), depression (1.0 [1.0–2.0] vs. 3.0 [2.0-5.0]; p < 0.01), post-traumatic stress disorder (1.0 [1.0–2.0] vs. 3.0 [1.0-4.0]; p < 0.01), insomnia (3.0 [4.0-7.0] vs. 6.0 [5.0–11.0]; p < 0.01), and loneliness (1.0 [3.0–4.0] vs. 2.0 [3.0–5.0]; p < 0.01) symptoms, but significantly higher median of the interquartile range (IQR) of scores for anxiety (2.0 [1.0–3.0] vs. 1.0 [2.0–3.0]; p < 0.01), and stress (7.0 [8.0–15.0] vs. 5.0 [8.0–13.2]; p < 0.01) symptoms (Table 2).

Table 2.

The median of the interquartile range (IQR) of psychological outcome scores in vaccinated and unvaccinated health care workers against COVID-19 infection.

Psychological outcomes	Total score	Vaccinated health care workers	Unvaccinated health care workers	P- value
	Median (IQR)	Median (IQR)	Median (IQR)
General health problems	4.0 (1.0–5.0)	2.0 (0–2.0)	4.0 (2.0–6.0)	<0.01
Depression symptoms	1.0 (1.0–2.0)	1.0 (1.0–2.0)	3.0 (2.0–5.0)	<0.01
Anxiety symptoms	1.0 (2.0–3.0)	2.0 (1.0–3.0)	1.0 (2.0–3.0)	<0.01
Stress symptoms	6.0 (8.0–14.0)	7.0 (8.0–15.0)	5.0 (8.0–13.2)	<0.01
Post-traumatic stress disorder symptoms	2.0 (1.0–3.2)	1.0 (1.0–2.0)	3.0 (1.0–4.0)	<0.01
Insomnia symptoms	6.0 (5.0–11.0)	3.0 (4.0–7.0)	6.0 (5.0–11.0)	<0.01
Loneliness symptoms	2.0 (3.0–5.0)	1.0 (3.0–4.0)	2.0 (3.0–4.0)	<0.01

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IQR, Interquartile range.

Prevalence of Psychological Outcomes

The prevalence of psychological outcomes among vaccinated and unvaccinated health care workers against COVID-19 infection are shown in Table 3. The prevalence rates of symptoms of general health problems, depression, anxiety, stress, post-traumatic stress disorder, insomnia, and loneliness symptoms among vaccinated HCWs were 16.7, 15.6, 24.8, 34.7, 22.3, 23.8, and 13.9%, respectively. On the other hand, the prevalence rates of symptoms of general health problems, depression, anxiety, stress, post-traumatic stress disorder, insomnia, and loneliness symptoms among unvaccinated HCWs were 59.1, 31.9, 26.1, 35.0, 30.8, 64.9, and 21.8%, respectively. However, vaccinated HCWs had a significantly lower prevalence rates of general health problems (16.7 vs. 59.1%, p < 0.01), depression (15.6 vs. 31.9%, p < 0.01), post-traumatic stress disorder (22.3 vs. 30.8%, p < 0.01), insomnia (23.8 vs. 64.9%, p < 0.01), and loneliness symptoms (13.9 vs. 21.8%, p < 0.01) compared to unvaccinated HCWs. Moreover, the vaccinated and unvaccinated HCWs did not differ significantly on anxiety (24.8 vs. 26.1%, p = 0.50) and stress (34.7 vs. 35.0%, p = 0.89) symptoms.

Table 3.

The prevalence of psychological outcomes among vaccinated and unvaccinated health care workers against COVID-19 infection.

Measure	Total (n = 2,038)	Vaccinated health care workers (n = 980)	Unvaccinated health care workers (n = 1,058)	P- value
	No. (%)	No. (%)	No. (%)
General health problems
Yes	789 (38.7)	164 (16.7)	625 (59.1)	<0.01
No	1,249 (61.3)	816 (83.3)	433 (40.9)
Depression symptoms
Yes	491 (24.1)	153 (15.6)	338 (31.9)	<0.01
No	1,547 (75.9)	827 (84.4)	720 (68.1)
Anxiety symptoms
Yes	594 (29.1)	243 (24.8)	276 (26.1)	0.50
No	1,444 (70.9)	737 (75.2)	782 (73.9)
Stress symptoms
Yes	710 (34.8)	340 (34.7)	370 (35.0)	0.89
No	1,328 (65.2)	640 (65.3)	688 (65.0)
Post-traumatic stress disorder symptoms
Yes	545 (26.7)	219 (22.3)	326 (30.8)	<0.01
No	1,493 (73.3)	761 (77.7)	732 (69.2)
Insomnia symptoms
Yes	920 (45.1)	233 (23.8)	687 (64.9)	<0.01
No	1,118 (54.9)	747 (76.2)	371 (35.1)
Loneliness symptoms
Yes	367 (18.0)	136 (13.9)	231 (21.8)	<0.01
No	1,671 (82.0)	844 (86.1)	827 (78.2)

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Correlations of Psychological Outcomes

Spearman's correlations of psychological outcomes among vaccinated and unvaccinated HCWs are shown in Table 4. In the vaccinated HCWs, there was a positive correlation between general health problems scores and depression (r_s = 0.208, p < 0.01), insomnia (r_s = 0.285, p < 0.01), and loneliness (r_s = 0.138, p < 0.01) scores, but a negative correlation with post-traumatic stress disorder (r_s = 0.135, p < 0.01) scores. Moreover, depression scores were positively linked to insomnia (r_s = 0.153, p < 0.01) and loneliness (r_s = 0.139, p < 0.01) scores, but negatively related to post-traumatic stress disorder (r_s = 0.071, p < 0.05) scores. Furthermore, there was a negative relationship between anxiety and post-traumatic stress disorder (r_s = 0.168, p < 0.01) scores, as well as anxiety and insomnia (r_s = 0.073, p < 0.05) scores. In addition, we found a positive link between insomnia and loneliness scores (r_s = 0.147, p < 0.01).

Table 4.

Spearman's correlations of psychological outcomes among vaccinated and unvaccinated health care workers against COVID-19 infection.

Health care workers	Psychological outcomes	1	2	3	4	5	6	7
Vaccinated health care workers	1	1.00
	2	0.208^**	1.00
	3	0.055	0.000	1.00
	4	0.052	0.031	0.000	1.00
	5	−0.135^**	−0.071^*	−0.168^**	0.032	1.00
	6	0.285^**	0.153^**	−0.073^*	0.043	0.037	1.00
	7	0.138^**	0.139^**	0.054	0.062	0.000	0.147^**	1.00
Unvaccinated health care workers	1	1.00
	2	0.127^**	1.00
	3	0.024	0.063^*	1.00
	4	−0.037	0.019	0.039	1.00
	5	0.147^**	0.047	0.023	−0.051	1.00
	6	0.349^**	0.147^**	0.090^**	−0.009	0.190^**	1.00
	7	0.079^*	−0.013	−0.002	0.023	0.236^**	0.078^*	1.00

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p < 0.05,

^**

p < 0.01. 1 General health problems, 2 Depression, 3 Anxiety, 4 Stress, 5 Post-traumatic stress disorder, 6 Insomnia, and 7 Loneliness.

In the unvaccinated HCWs, general health problems scores were positively linked to depression (r_s = 0.127, p < 0.01), post-traumatic stress disorder (r_s = 0.147, p < 0.01), insomnia (r_s = 0.349, p < 0.01), and loneliness (r_s = 0.079, p < 0.05) scores. Moreover, there was a significant positive correlation between depression and anxiety (r_s = 0.063, p < 0.05), along with depression and insomnia (r_s = 0.147, p < 0.01) scores. Only a significant positive relationship existed between anxiety and insomnia (r_s = 0.090, p < 0.01) scores. Furthermore, there was a positive relationship between post-traumatic stress disorder and insomnia (r_s = 0.190, p < 0.01), as well as post-traumatic stress disorder and loneliness (r_s = 0.236, p < 0.01) scores. In addition, the study discovered a positive link between insomnia and loneliness (r_s = 0.078, p < 0.05) scores.

Risk Factors of Psychological Outcomes

The results of the univariate logistic regression analysis of factors associated with psychological outcomes among vaccinated and unvaccinated health care workers against COVID-19 infection are presented in Supplementary Table 1. The variables found to be significant in the univariate logistic regression analysis were included in the multivariate analysis. The multivariate logistic regression analysis (Supplementary Table 2) showed that among vaccinated HCWs, females were significantly associated with a higher risk of symptoms of general health problems (AOR, 2.71; 95% CI, 0.97–7.60), anxiety (AOR, 2.17; 95% CI, 1.14–4.13), and loneliness (AOR, 2.52; 95% CI, 1.11–5.73) compared to males. Except for anxiety and post-traumatic stress disorder symptoms, participants living in urban areas had a significantly lower risk of all psychological symptoms than those living in rural areas (general health: AOR, 0.15; 95% CI, 0.09–0.25; depression: AOR, 0.43; 95% CI, 0.27–0.67; stress: AOR, 0.64; 95% CI, 0.47–0.88; insomnia: AOR, 0.41; 95% CI, 0.29-0.59; and loneliness: AOR, 0.29; 95% CI, 0.19-0.44). Respondents who were married were significantly less likely to experience symptoms of general health problems (AOR, 0.10; 95% CI, 0.02-0.39), depression (AOR, 0.31; 95% CI, 0.22–0.82), insomnia (AOR, 0.46; 95% CI, 0.20-1.03), and loneliness (AOR, 0.31; 95% CI, 0.10–0.92) than divorced, separated, or widowed respondents. Participants who worked as doctors were significantly less likely to experience symptoms of general health problems (AOR, 0.18; 95% CI, 0.08–0.37), depression (AOR, 0.51; 95% CI, 0.30–0.87), and anxiety (AOR, 0.54; 95% CI, 0.37–0.78) compared to other working positions.

On the other hand, unvaccinated HCWs who were 18–29 years old and had <5 years of work experience were significantly associated with a higher risk of all psychological outcomes except anxiety and insomnia symptoms (e.g., depression among 18–29 years old: AOR, 1.83; 95% CI, 0.27–2.60; stress among those with <5 years of work experience: AOR, 2.37; 95% CI, 0.93–6.07). Participants who worked as nurses were significantly more likely to suffer from depression (AOR, 1.44; 95% CI, 0.84–2.46), anxiety (AOR, 1.42; 95% CI, 0.24–1.73), and stress (AOR, 1.55; 95% CI, 0.31–0.89) than those who worked in other positions. Except for anxiety and stress symptoms, respondents who worked as frontline workers and provided direct care to infected patients were the significantly higher chance of experiencing all psychological outcomes (e.g., depression among who worked as frontline workers: AOR, 2.41; 95% CI, 0.23–3.73; insomnia among those who provide direct care to infected patients: AOR, 2.60; 95% CI, 0.34–3.06). Respondents who were infected with COVID-19 had a significantly less chance of experiencing symptoms of general health problems (AOR, 0.89; 95% CI, 0.65–1.22), depression (AOR, 0.66; 95% CI, 0.48–0.92), and anxiety (AOR, 0.63; 95% CI, 0.46–0.87) when compared to those who were not.

Discussion

This is the first nationwide study in Bangladesh that has evaluated the factors associated with psychological outcomes among vaccinated and unvaccinated HCWs against COVID-19 infection. A total of 2,038 HCWs were enrolled in this study (980 being vaccinated and 1,058 being unvaccinated). Our study found that the prevalence rates of general health problems, depression, anxiety, stress, post-traumatic stress disorder, insomnia, and loneliness symptoms among vaccinated HCWs were 16.7, 15.6, 24.8, 34.7, 22.3, 23.8, and 13.9%, respectively. On the other hand, the prevalence rates of general health problems, depression, anxiety, stress, post-traumatic stress disorder, insomnia, and loneliness symptoms among unvaccinated HCWs were 59.1, 31.9, 26.1, 35.0, 30.8, 64.9, and 21.8%, respectively. However, our study revealed that vaccinated HCWs showed statistically significant differences in lower prevalence rates of general health problems, depression, post-traumatic stress disorder, insomnia, and loneliness symptoms than unvaccinated HCWs. Moreover, no statistically significant differences in anxiety and stress symptoms between both groups were found. Similarly, as compared to unvaccinated HCWs, vaccinated HCWs had considerably lower median (IQR) scores on general health problems, depression, post-traumatic stress disorder, insomnia, and loneliness symptoms. According to Spearman's correlations, among vaccinated HCWs, there was a positive correlation between general health problems scores and depression, insomnia, and loneliness scores, but a negative correlation with post-traumatic stress disorder scores. In the unvaccinated HCWs, general health problems scores were positively linked to depression, post-traumatic stress disorder, insomnia, and loneliness scores.

This research indicated that vaccinated HCWs had a lower prevalence of psychological outcomes than unvaccinated HCWs against the COVID-19 outbreak in Bangladesh. These findings paralleled a study conducted in the United States among 300 HCWs, which revealed that vaccination against COVID-19 improved HCWs' physical and mental health (44). Another study conducted in China reported that the COVID-19 vaccine could improve the mental health status of vaccinated individuals (45). Moreover, Chen et al. (46) study were done between January 6-June 7, 2021, reported that being vaccinated for SARS-CoV-2 was associated with lower odds of depressive symptoms than those not vaccinated. Furthermore, our findings were also consistent with another study, which showed that human papillomavirus (HPV) vaccination might relieve the depression of vaccinated individuals (47). Based on the information presented above, our hypotheses were partially confirmed. The current study discovered many factors linked to both vaccinated and unvaccinated HCWs.

Our findings showed that females vaccinated HCWs were significantly associated with a higher risk of symptoms of general health problems, anxiety, and loneliness compared to males. This finding was consistent with previous research, which found that female HCWs were poorer psychological outcomes than males before the vaccination program (10, 48–50) and that females were more accepting of COVID-19 vaccination than males (51, 52). This study revealed that except for anxiety and post-traumatic stress disorder symptoms, participants living in urban areas had a significantly lower risk of all psychological symptoms among vaccinated HCWs. These findings were in line with prior Bangladeshi studies (15, 53, 54), which claimed that HCWs working in urban areas had a higher rate of psychological outcomes. In a cross-sectional survey of 3,646 adults in Bangladesh, Avedin et al. (55) discovered that 81% of urban participants wanted to be vaccinated. Similar studies also found that participants who lived in a city were similarly more likely to pay for and take the COVID-19 vaccine (56, 57). In Bangladesh, urban areas may have higher rates of infection and mortality among HCWs and the general population than rural areas (53). Most doctors are located in Dhaka and major cities (58). HCWs working in COVID-19 and non-COVID settings face a high workload, constant exposure, infection risk, ethical decisions about rationing resources among patients, and safety concerns for family members (49, 53). As a result, the concerned authority should pay particular attention and care to vaccinated HCWs from urban areas during this or future pandemics.

Our findings revealed that being married was a common risk factor for general health problems, depression, insomnia, and loneliness symptoms among vaccinated HCWs, which contradicts a recent national cross-sectional study involving 453,167 participants in the United States, which found that widowed, divorced, or separated people have a stronger association between SARS-CoV-2 vaccination and reduced depression and anxiety symptoms (46). However, our findings are in line with previous research, which found that being married is a common risk factor for adverse psychological outcomes (53, 59). However, in a recently published study of HCWs affected by the COVID-19 pandemic, married HCWs reported higher scores in vicarious traumatization symptoms than unmarried HCWs (60). It could be the reason for married HCWs having more occupational exhaustion and family responsibilities than unmarried HCWs.

The current study discovered that being a doctor is an independent risk factor for general health problems, depression, and anxiety symptoms among vaccinated HCWs, which was in agreement with prior studies that found doctors to be more vulnerable to COVID-19 (37, 61, 62). Similarly, in a study of 450 HCWs in Ethiopia, Angelo et al. (63) discovered that physicians were nearly fifteen times more likely than other HCWs to accept the COVID-19 vaccine. Prior studies also found that physicians were more likely than other HCWs to get COVID-19 vaccination (64, 65). It could be due to physicians having a better understanding of the coronavirus and its vaccine than the general public (66). Physicians may also have witnessed the disease's fatality, which may increase the likelihood that they will accept the COVID-19 vaccine.

The present study found that among unvaccinated HCWs, being 18–29 years old and working for <5 years were common risk factors for all psychological outcomes except anxiety and insomnia symptoms. These findings are expected. Because before the vaccination program worldwide there were many studies found that being 18-29 years old and have worked <5 years, HCWs were associated with higher psychological outcomes during the SARS outbreak (59), Avian influenza A (H7N9) virus outbreak (67), and COVID-19 epidemic (68). Moreover, Mohammed et al. (69) showed that in a survey of 614 Ethiopian healthcare practitioners, participants under the age of 30 were nearly five times more likely to be hesitant of being vaccinated than those over the age of 40. Furthermore, a Turkish study of 212 research assistants and 23 specialty physicians at Akdeniz University Hospital found that physicians who had worked for <5 years had lower vaccine uptake (70). These findings could be explained by the lack of a clinical study for any immunization and no evidence for reference about the COVID-19 vaccine's safety in Bangladesh. According to Mahmud et al. (71), 64.86% of people postpone immunization until the vaccine's efficacy and safety are established, or COVID-19 becomes more deadly in Bangladesh. It could be one of the reasons for vaccine apprehension, particularly among the young and those with little work experience. False rumors and misconceptions concerning the COVID-19 vaccines must be dispelled, and individuals must be educated to the true scientific facts to boost vaccine acceptability among the younger generation and those with minimal job experience.

The present study demonstrated that participants who worked with a nurse were significantly more likely to suffer from symptoms of depression, anxiety, and stress among unvaccinated HCWs. This finding was supported by many other studies (72, 73). A systematic review of 33,062 HCWs, Pappa et al. (74) discovered that nurses have higher rates of psychological symptoms than other medical staff. It may be a fact that nurses are in charge of dealing with patients, performing more invasive procedures, and working for extended periods. This result also corresponds to other studies, which found that nurses were less likely than different working positions to be vaccinated (64, 65). According to Browne et al. (75), the prime causes for vaccine hesitancy among nurses were concerns about adverse effects, the novelty of the vaccine, and a lack of vaccine knowledge. To ensure the success of the national vaccination drive, tailored strategies and vaccine promotion campaigns aimed at nurses are required.

It was not surprising that respondents who worked as frontline workers and provided direct care to infected patients were a significantly higher chance of experiencing all psychological outcomes except anxiety and stress symptoms among unvaccinated HCWs. Many studies evaluated the traumatic effects of COVID-19 and revealed that frontline workers were reported higher symptoms of psychological consequences (68, 76). It could be due to a lack of antiviral materials, unpleasant feelings from patients, quarantine, and loss of communication with their families, all of which led to the poor psychological outcomes of frontline employees. Moreover, this conclusion contradicts recent studies (77) but it was aligned with Nguyen et al. (78), who reported a higher than anticipated rate of vaccine hesitancy among frontline HCWs. Furthermore, direct treatment to infected individuals was also connected to more unfavorable psychological outcomes during the SARS outbreak (5, 79), and the COVID-19 outbreak (76, 80). However, in a survey of 5,287 US healthcare workers, Shaw et al. (81) discovered that direct care providers and COVID-19 patient care providers had lower vaccine acceptability than others. They might want to hold off on analyzing more data until they can see how the vaccination impacts others and learn more about vaccine safety and effectiveness (64, 81). They are trusted and respected community members on public health issues. Their early-stage public acceptance and uptake of COVID-19 immunizations have the potential to affect public perceptions toward the vaccine. As a result, the COVID-19 vaccination should be accepted as soon as possible.

The present study suggests that respondents who were infected with COVID-19 had a significantly less chance of experiencing symptoms of general health problems, depression, and anxiety among unvaccinated HCWs. In contrast to our findings, a recent study done in Bangladesh by Rahman et al. (82) discovered that having positive COVID-19 test results were linked to higher psychological distress. Another study involving 283 HCWs in Saudi Arabia found that being positive for COVID-19 was not associated with an increase in depression and anxiety symptoms (83). However, our findings were consistent with a prior study involving 475 emergency HCWs in the United States, which discovered that those with a history of COVID-19 infection had lower vaccine intent (84). It could be because HCWs believe that natural infection has provided them with sufficient immunological protection against COVID-19, and thus vaccination will be ineffective. It is likely to be true in the short term. However, the risk of infection may increase with time since infection, given evidence concerning waning humoral immunity to COVID-19 and the short-lived immunity after infection with other coronaviruses (85). As a result, our novel findings could be beneficial to HCWs in those regards. However, this does not imply that they were knowingly infected with COVID-19. Whether or not they are infected, the current study suggests that they get vaccinated as soon as possible.

Strengths and Limitations

The following are some of the study's advantages: first, the first nationwide study in Bangladesh that has evaluated the factors associated with psychological outcomes among vaccinated and unvaccinated HCWs against COVID-19 infection. Second, this research discovered that fully vaccinated HCWs against COVID-19 infection had a significant positive impact on their mental health. Third, this study had a large sample size and included a variety of HCWs, allowing meaningful findings to be drawn. Finally, this research will add to our understanding of SARS-CoV-2 vaccination and mental health, as well as assist governments and policymakers in developing an effective vaccine campaign to achieve vaccination coverage and herd immunity among HCWs and the general public during the SARS-CoV-2 outbreak.

This study provides novel findings on psychological outcomes and associated factors among vaccinated and unvaccinated Bangladeshi HCWs against COVID-19 infection, but its limitations must not be overlooked. First, psychological outcomes were determined using a self-report tool and an online survey. Future research should include clinical interviews or qualitative studies to get a more complete picture of the problem. Second, this online survey used convenience and snowball sampling, excluding HCWs who do not have internet access. Although the findings of this study may not be representative of all Bangladeshi HCWs, this should not have influenced our conclusions about the risk factors. Third, it is impossible to estimate the response rate because it is unclear how many people received the survey link. Finally, this study did not consider influencing factors such as which developer's vaccine you received and taking any vaccine after the age of 18.

Conclusion

A lower prevalence of psychological outcomes was found among vaccinated HCWs against COVID-19 infection as well as risk factors for developing them. To control the infection and improve psychological outcomes, this study suggests emphasizing the vaccinated to unvaccinated HCWs as soon as possible. They also required special attention, health-related education, and psychological support.

Data Availability Statement

The original contributions presented in the study are included in the article/Supplementary Materials, further inquiries can be directed to the corresponding author/s.

Ethics Statement

The studies involving human participants were reviewed and approved by Institutional Ethical Review Board (IERB) of the Holy Family Red Crescent Medical College and Hospital, Dhaka, Bangladesh (Approval No: IERB/36) and the Ethics Committee of the First Affiliated Hospital, Zhejiang University School of Medicine. The patients/participants provided their written informed consent to participate in this study.

Author Contributions

MA: conceptualization, methodology, formal analysis, and writing—original draft. MA, SP, and MM: data collection. MA, SP, MM, LN, and YX: writing—review, and editing. All authors contributed to the article and approved the submitted version.

Funding

This study was supported by the National Natural Science Foundation of China (Grant Nos. 81801340 and 81971271) and the Natural Science Foundation of Zhejiang Province (Grant No. LQ18H090001). The funding sources had no involvement in the study design, data collection, analysis, interpretation of data, writing of the report, or the decision to submit the paper for publication.

Conflict of Interest

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Publisher's Note

All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.

Acknowledgments

The authors thank all participants for their time and excellent cooperation in the survey.

Supplementary Material

The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fmed.2022.852922/full#supplementary-material

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Supplementary Materials

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Data Availability Statement

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PERMALINK

Factors Associated With Psychological Outcomes Among Vaccinated and Unvaccinated Health Care Workers Against COVID-19 Infection in Bangladesh

Md Dhedharul Alam

Sujan Kumer Paul

Mahmuda Momi

Li Ni

Yi Xu

Abstract

Background

Methods

Results

Conclusions

Introduction

Materials and Methods

Study Design

Participants

Measurements

Demographic Information

General Health Questionnaire

Patient Health Questionnaire

Generalized Anxiety Disorder Scale

Perceived Stress Scale

Primary Care PTSD Screen for DSM-5

Insomnia Severity Index

University of California, Los Angeles, Loneliness Scale

Oslo Social Support Scale

Statistical Analysis

Results

Sample Characteristics

Table 1.

Scores of Psychological Outcomes

Table 2.

Prevalence of Psychological Outcomes

Table 3.

Correlations of Psychological Outcomes

Table 4.

Risk Factors of Psychological Outcomes

Discussion

Strengths and Limitations

Conclusion

Data Availability Statement

Ethics Statement

Author Contributions

Funding

Conflict of Interest

Publisher's Note

Acknowledgments

Supplementary Material

References

Associated Data

Supplementary Materials

Data Availability Statement

ACTIONS

PERMALINK

RESOURCES

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