ANTISOCIAL PERSONALITY-DISORDERS

3258 randomly selected adult household residents of Edmonton, Canada, were interviewed by trained lay interviewers using the Diagnostic Inte rview Schedule (DIS). 104 subjects fulfilled DSM-III antisocial person ality disorder (ASP) criteria. Lifetime prevalence rates were found to be significantly higher in males and in the younger adult age groups. The age of onset (i.e. age at which conduct disorder symptoms first a ppeared) was found to be under 10 years in the majority of cases, with females lagging just slightly behind males. Symptom patterns and freq uencies were examined and the relative risks for these symptoms were c alculated. Cormorbidity, calculated using full DSM-III severity criter ia, but without exclusion criteria, revealed an increased prevalence o f nearly every other psychiatric disorder in those with antisocial per sonality disorder, with 90.4% having at least one other lifetime psych iatric diagnosis.