Objectives: The aim of this study was to (1) to explore the validity of the depression diagnosis made by the general practitioner (GP) and factors associated with it, (2) to estimate rates of treatment adequacy for depression and factors associated with it and (3) to study how rates of treatment adequacy vary when using different assessment methods and criteria.
Methods: Epidemiological survey carried out in 77 primary care centres representative of Catalonia. A total of 3815 patients were assessed.