A history of abuse in childhood increases the likelihood of lifetime psychopathology; this association appears stronger for women than men.

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This article describes the development and evaluation of the revised Ontario Child Health Study (OCHS) scales to measure conduct disorder, oppositional disorder, attention-deficit hyperactivity disorder, overanxious disorder, separation anxiety and depression based on DSM-III-R symptom criteria. Problem checklist assessments were obtained from parents and teachers of children aged 6-16 and youths aged 12-16 drawn from: (1) a general population sample (N = 1751); and (2) a mental health clinic sample (N = 1027) in the same industrialized, urban setting. Evaluation of the revised OCHS scales indicates that they possess adequate psychometric properties and provide an efficient means to obtain measurements of childhood psychiatric disorder, in general population studies, that correspond to DSM-III-R classification of disorder.