Comorbidity of depression with chronic diseases: a population-based study in Aleppo, Syria.

Objective: To assess the comorbidity and correlates of depression in chronic diseases in the community in Aleppo, Syria. This has never been previously investigated in an Arab country.

Method: We conducted a cross-sectional, population-based study in Aleppo on adults aged 18-65 (N = 2038). We collected data utilizing a structured interview questionnaire. Socio-demographics, general health information, and self-report of physician-diagnosed depression and chronic diseases active in the past year were obtained. We used logistic regression to estimate the odds of depression in chronic diseases and socio-demographic correlates of depression comorbid with chronic diseases.

Results: Mean age (SD) was 35.3 (12.1) years, 55% were female. In women, predictors of depression were heart disease (OR = 3.95, 95% CI: 1.50-10.40), hypertension (OR = 2.92, 95% CI: 1.53-5.55), and kidney disease (OR = 2.96, 95% CI: 1.64-5.32). Depression comorbidity with any chronic disease decreased in higher socio-economic status (middle vs. low: OR = 0.28, 95% CI: 0.12-0.65; high vs. low: OR = 0.20, 95% CI: 0.05-0.81). In men, predictors of depression were rheumatism (OR = 7.10, 95% CI: 2.58-19.60) and respiratory disease (OR = 3.77, 95% CI: 1.23-11.60). Depression comorbidity decreased in residence in formal zones (OR = 0.22, 95% CI: 0.06-0.80).

Conclusion: Depression is associated with many chronic diseases in the community in Aleppo, a finding consistent with reports from other cultures. Potential gender-related risk factors were identified. Findings inform public mental health planning and support the delivery of depression treatment in primary care settings.