title: Reliability and relationship of various ages of onset criteria for major affective disorder.
abstract: This paper presents data on six different clinical definitions (indices) of age of onset for major affective disorders. The inter-rater reliability for each index and the relationships among these indices are discussed. Age of onset for impairment with affective symptoms was found to be a reliable and useful index of early onset. It discriminated between unipolar depressed subjects and both bipolar I and bipolar II subjects.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001714:Bipolar Disorder / Q000175:diagnosis; D002648:Child; D003866:Depressive Disorder / Q000175:diagnosis; D006801:Humans; D008875:Middle Aged; D019964:Mood Disorders / Q000175:diagnosis* / Q000523:psychology; D011581:Psychological Tests; D012069:Religion and Psychology; D012934:Social Isolation