Social determinants of depression: association with age, gender and primary health care model

Background Depression is one of the most common mental disorders worldwide and is a major contributor to the overall global burden of disease. The social determinants of age, gender and access to a primary health care physician have been identified as significant determinants of variability in the prevalence of depression. This research evaluates the association between depression and these social determinants in the city of Almada, in Portugal. Methods This cross-sectional study reports the one-month prevalence (December, 2015) of depression and its association with age, gender and access to a primary health care doctor in Almada's primary health care population. Data was collected from the 'Information System of the Regional Health Administration' (SIARS) database. The diagnostic tools used for the identification of cases were the ICPC-2 codes 'P76: Depressive Disorder' and 'P03: Feeling Depressed'. An odds ratio was applied as an association measure. Results Regarding gender and age: women are more likely to develop depression than men (OR 3.21) and the age group of 40-64 years is more likely to develop depression compared with other age groups (OR 2.21). The odds of being affected by depression for patients with a permanent primary health care physician, compared with users without a permanent primary health care physician, are higher (OR 2.24). Conclusions The patterns of association of age and gender, uncovered in this dataset, are consistent with previously reported findings for other Western countries. The association between depression and the assignment of a permanent primary health care doctor is highly significant. This finding suggests the existence of a higher detection rate of depression in patients with a permanent doctor and adds weight to the need to implement health policies that guarantee a primary health care physician for each patient. Key messages The age and gender gap in depression calls for stronger public health and intersectoral strategies to promote and protect mental health, in community-based settings. Reducing barriers and enhancing access to high-quality primary medical care must be a cornerstone of mental health policies.