Background: Estimates of the annual prevalence for Obsessive Compulsive Disorder (OCD) were consistent across the international sites range, 1.9% -2.5%. The nine population surveys, which used Diagnostic Interview Schedule, estimated a six-month prevalence of OCD ranging from 0.7% to 2.1%.

Lifetime prevalence of epilepsy in Iran is not low. As the other communities, it is more common in females and unemployed. However, in contrast with the other studies, it was not more common among some age groups and unmarried and low educated subjects.

This study is part of broader research aimed to determine the lifetime prevalence and pattern of comorbidity on self-reported suicidal attempts in the general population of Iran. Overall, 25,180 subjects were interviewed, face-to-face, at home; the lifetime prevalence was 1.4% (0.9% males and 2% females). The majority of attempters were 26-55 years of age, married, more highly educated, female, retired, and lived in urban areas. Many of the attempters (45.3%) reported at least one psychiatric disorder during their lifetime; major depressive disorder (22%), panic disorder (6.3%), and obsessive compulsive disorder (6%) was the most common. Because less than half of suicidal attempters reported a psychiatric disorder, the existence of other pathways to suicide may be important foci for prevention. Many of the demographic correlates of suicidal behavior in Iran are very similar to those seen in Western cutlures; however, the sociodemographic factors such as few working women and very low levels of divorce is quite different to that of Western populations.