Comorbidity of depression and obsessive compulsive disorder subtypesin non-clinical samples

ِِDepression is of more common comorbiditis of Obsessive-Compulsive Disorder. The present study was planned to clarify this relationship in non-clinical samples, based on Obsessive-Compulsive Disorder subtypes. In this correlational study 409 students (182 males and 227 females) studying in Payam-e-Noor university, branches of Tabriz, Sarab and Ardabil cities, north western part of Iran in 2008, were randomly selected and full filed Beck Depression and Padua Inventories. Data were analyzed by ANOVA and multi-variation regression tests. Uncontrollable mental activities (P<0. 0001, F=162. 27), uncontrollable motor behaviors (P<0. 0001, F=116. 21), and contamination (P<0. 0001, F=89. 61), subtypes were most related with depression, while checking subtype had the least relationship with depression. OCD patients with dominant obsessive thoughts are more suffering from depression, perhaps this truth leads they to less benefit from available treatments, comparing with patients who have dominant compulsions.