The new data collected included a psychiatric diagnostic interview, the World Mental Health Organization Composite Diagnostic Interview (CIDI),41 which was administered at the fourth wave. The CIDI yields psychiatric diagnoses according to the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV). Ormel et al.3 provided an extensive overview of the prevalence, severity, age of onset, continuity and comorbidity of these disorders in the population cohort. Since the publication of this article, information on psychiatric diagnoses has also become available for the clinical cohort of TRAILS (Table 3). Substantially elevated prevalence rates in the clinical cohort were found for obsessive compulsive disorder, attention deficit / hyperactivity disorder and oppositional defiant disorder, followed by other anxiety disorders and mood disorders. Table 3.Lifetime prevalences of DSM-IV psychiatric disorders in the population and clinical cohort of TRAILS, at mean age 19 yearsDiagnosisLifetime prevalence (SEa) in %Population cohort (N = 1584)Clinical cohort (N = 349)Mood disorders Major depressive disorder15.5 (0.9)20.1 (2.1) Bipolar disorder1.5 (0.3)2.6 (0.9) Dysthymia1.7 (0.3)2.7 (0.9)Anxiety disorders Generalized anxiety disorder2.9 (0.4)4.3 (1.1) Social phobia12.4 (0.8)21.8 (2.2) Specific phobia11.5 (0.8)16.6 (2.0) Agoraphobia (without panic)1.0
