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Diagnostic cohort study.
Four outpatient psychiatric clinics, US; April 2002 to September 2003.
104 adolescents (mean age 14.5 years; range 12–17 years; 54% female) attending outpatient psychiatric clinics.
Mood Disorder Questionnaire-Adolescent version (MDQ-A), which consists of 13 yes/no items about the presence of manic symptoms for periods of a week or more. Positive answers are summed to give a maximum score of 13. Three …
For correspondence: Karen Dineen Wagner, MD, Department of Psychiatry and Behavioural Sciences, 301 University Boulevard, Galveston, TX 77555-0188, USA;
Source of funding: GlaxoSmithKline.