Aim Community health workers (CHWs) are key in managing diabetes and depression, providing education, support, and care coordination. However, the effectiveness of CHW interventions in reducing depression and improving diabetes outcomes remains uncertain. This study aims to evaluate the impact of CHW interventions on depression and hemoglobin A1C (HbA1c) levels through a meta-analysis of existing studies. Subject and methods A systematic search was conducted using the electronic databases PubMed, Scopus, Web of Science, and Cochrane Library to identify studies examining the roles of CHWs in addressing diabetes and related mental health conditions such as depression. Two investigators independently extracted data covering study characteristics, participant details, interventions, and outcomes, while quality assessment was conducted using the Cochrane risk of bias tool for randomized controlled trials (RCTs) and the Newcastle–Ottawa Scale for non-randomized studies. Results This meta-analysis examined the effect of CHW interventions on depression and HbA1c levels. The analysis of depression scores using the Patient Health Questionnaire-9 (PHQ-9) scale across four studies showed a small, nonsignificant reduction (mean difference [MD] = 1.337, 95% CI [−3.81 to 6.48], p = 0.6105), with no evidence of heterogeneity (I2 = 0.0%). These findings suggest that while CHW interventions may have a slight effect on depression, the evidence is not robust. Similarly, the meta-analysis of HbA1c levels across eight studies revealed a modest intervention effect (MD = 0.55, 95% CI [−0.74 to 1.84], p = 0.4021), with no significant heterogeneity. The wide confidence interval and nonsignificant p-value suggest no strong evidence for a meaningful reduction in HbA1c levels, indicating that the intervention may have only a modest impact. Conclusion This meta-analysis suggests that CHW interventions may have a modest effect on depression and HbA1c levels, but the results are not statistically significant, indicating limited evidence for their effectiveness. The lack of heterogeneity across studies suggests consistency, but the non-significant findings call for more research. Overall, the studies suggest that vulnerable groups benefit from culturally tailored interventions, CHW support, and social programs, improving HbA1c, self-efficacy, and diabetes distress.

Community health worker interventions in diabetes and depression: meta-analysis

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发表日期：

2025年7月17日

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Abdulmalik Mohammed Aloriney

摘要

Aim

Community health workers (CHWs) are key in managing diabetes and depression, providing education, support, and care coordination. However, the effectiveness of CHW interventions in reducing depression and improving diabetes outcomes remains uncertain. This study aims to evaluate the impact of CHW interventions on depression and hemoglobin A1C (HbA1c) levels through a meta-analysis of existing studies.

Subject and methods

A systematic search was conducted using the electronic databases PubMed, Scopus, Web of Science, and Cochrane Library to identify studies examining the roles of CHWs in addressing diabetes and related mental health conditions such as depression. Two investigators independently extracted data covering study characteristics, participant details, interventions, and outcomes, while quality assessment was conducted using the Cochrane risk of bias tool for randomized controlled trials (RCTs) and the Newcastle–Ottawa Scale for non-randomized studies.

Results

This meta-analysis examined the effect of CHW interventions on depression and HbA1c levels. The analysis of depression scores using the Patient Health Questionnaire-9 (PHQ-9) scale across four studies showed a small, nonsignificant reduction (mean difference [MD] = 1.337, 95% CI [−3.81 to 6.48], p = 0.6105), with no evidence of heterogeneity (I² = 0.0%). These findings suggest that while CHW interventions may have a slight effect on depression, the evidence is not robust. Similarly, the meta-analysis of HbA1c levels across eight studies revealed a modest intervention effect (MD = 0.55, 95% CI [−0.74 to 1.84], p = 0.4021), with no significant heterogeneity. The wide confidence interval and nonsignificant p-value suggest no strong evidence for a meaningful reduction in HbA1c levels, indicating that the intervention may have only a modest impact.

Conclusion

This meta-analysis suggests that CHW interventions may have a modest effect on depression and HbA1c levels, but the results are not statistically significant, indicating limited evidence for their effectiveness. The lack of heterogeneity across studies suggests consistency, but the non-significant findings call for more research. Overall, the studies suggest that vulnerable groups benefit from culturally tailored interventions, CHW support, and social programs, improving HbA1c, self-efficacy, and diabetes distress.