Dear editor
We have perused the original article titled “Prevalence of Depression and Its Associated Factors Among Hemodialysis Patients in Hodeida City, Yemen” by Alkubati SA et al.1 It is a valuable and interesting research. The strengths of this study are as follows: (1) This study is the first to identify the prevalence of depression and its associated factors among Yemeni hemodialysis (HD) patients who are facing multiple war-related crises or ongoing political conflict and have been overlooked, remain undiagnosed and receive limited care. Paying more attention to the mental health of HD patients in developing countries or regions (eg, Yemen) and providing tailored psychological support and nursing care are the mission of healthcare professionals; (2) The study employed the OpenEpi website formula to calculate the sample size, which provided a new insight into the sample size estimation methods;2 (3) The authors conducted in-depth discussion, fully compared their research findings with previous studies performed in other countries (eg, China, Jordan, Saudi Arabia, Lebanon, Malaysia, Palestine, etc), and analyzed the specific reasons for these differences.
Nevertheless, this study encountered certain constraints and some areas for improvement: (1) The authors may consider using G*Power version 3.1.9.7 software3 to calculate the sample size, a very quick and convenient software; (2) There are two areas in the text that need to be corrected: (a) Page 694, the Sex variable in Table 2 has incorrect N value for female. After correction, as shown in Table 1 of this letter. (b) Page 693, the description of “The results showed that only female (odds ratio (OR)=0.298; 95% confidence interval (CI)=0.132–0.674; p=0.004)” is inconsistent with the results in Table 3 of page 695, it should be described as “The results showed that only female (odds ratio (OR)=3.352; 95% confidence interval (CI) = 1.484–7.570; p=0.004)”; (3) The variables included for binary logistic regression analysis in this study are relatively limited. Some professionally significant factors related to depression were not included in multivariate binary logistic regression to identify independent predictors of depression, eg, marital status, economic income, living status, suffering from chronic diseases, war-related factors, etc. In future research, when conducting logistic regression analysis, on the one hand, the authors should not only include statistically significant factors in the chi-square test but also consider including professionally significant factors in the analysis. On the other hand, the authors may also consider incorporating factors with P-values less than 0.1 or 0.2 in univariate analysis into multivariate regression.4
Table 1.
Factors Associated with Depression Among HD Patients (n = 200)
| Variable | N | PHQ-9 Depression Score n (%) | Chi-square | P-value | |
|---|---|---|---|---|---|
| <10 | ≥ 10 | ||||
| Sex | |||||
| Male | 149 | 65 (43.6) | 84 (56.4) | 10.99 | <0.001* |
| Female | 51 | 9 (17.6) | 42 (82.4) | ||
Note: Star sign (*) and bold text indicate significant result.
Abbreviation: PHQ-9, 9-item Patient Health Questionnaire.
This study recommends several additional areas for further research directions: (1) Future larger-scale and multi-center study at HD centers in Yemen are needed to draw convincing conclusions; (2) Qualitative research can be conducted to explore the subjective experiences of HD patients with depressive symptoms during war conflicts in Yemen; (3) In future research, a control group can be established to compare the depression situation (eg, prevalence, severity, associated factors) of Yemeni HD patients and the general population; (4) Understanding the modifiable or controllable psychosocial factors of depression among Yemeni HD patients and identifying the specific pathways or mechanisms by which these psychosocial factors impact depression through structural equation modeling or mediating effects model can inform the development of targeted interventions and improve the quality of life and health outcomes of HD patients.
Acknowledgments
We thank all the authors of the paper titled ”Prevalence of Depression and Its Associated Factors Among Hemodialysis Patients in Hodeida City, Yemen” for conducting a valuable and interesting study in Yemen, a developing Arab country in the Middle East.
Disclosure
The authors reported no conflicts of interest in this communication.
References
- 1.Alkubati SA, Al-Sayaghi KM, Salameh B, et al. Prevalence of depression and its associated factors among hemodialysis patients in Hodeida city, Yemen. J Multidiscip Healthc. 2024;17:689–699. doi: 10.2147/JMDH.S452935 [DOI] [PMC free article] [PubMed] [Google Scholar]
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- 3.Allgemeine Psychologie und Arbeitspsychologie. Statistical power analyses for mac and windows. Available from: https://www.psychologie.hhu.de/arbeitsgruppen/allgemeine-psychologie-und-arbeitspsychologie/gpower.html. Accessed March 06, 2024.
- 4.Li XS. Medical Statistics. Beijing: Higher Education Press; 2018. [Google Scholar]