To compare the prevalence of depression within the elderly Quebec population residing in rural areas, urban areas and metropolitan Montreal, and to assess differences in the associations between social relationships and depression across these urban and rural settings.
Data originate from the first wave of the ESA (Etude de Santé des Ainés) longitudinal study on mental health of community dwelling older persons aged over 65 (n = 2670). Depression, including major and minor depression, measured using a computer questionnaire; the ESA-Q developed by the research team and based on the DSM-IV criteria. Assessments of associations between depression and geographic area, informal social networks and community participation were estimated adjusting for demographic, socioeconomic and health characteristics.
The prevalence of depression was higher in rural (17%) and urban areas (15.1%) than in metropolitan Montreal (10.3%). The odds ratio of rural (OR = 2.01 95% CI 1.59-2.68) and urban (OR = 1.75; 95% CI 1.25-2.45) areas compared to the metropolitan area increased slightly after adjustment by all social and health covariates. Our study indicated that social support and the lack of conflict in intimate relationships were associated with lower prevalence of depression in all areas.
Geographic differences in depression exist within the elderly population in Quebec that may generate significant impact on their health and functional abilities. Further research should be conducted to explain these differences.