title: Prognostic implications of six alternative definitions of schizophrenia.
abstract: The ability of six different operational definitions of schizophrenia to identify prospectively patients whose eventual prognosis would be poor was studied using data from a six-year follow-up of a series of 134 patients with functional psychoses. All six definitions were more successful at predicting a poor symptomatic outcome than a poor social outcome. Spitzer's Research Diagnostic Criteria, Carpenter's flexible criteria, and Langfeldt's criteria predicted a poor outcome as well as the original clinical diagnoses and were considerably better than the New Haven criteria, Schneider's first rank symptoms, or the computer program Catego.
mesh_terms: D000328:Adult; D003702:Delusions; D004185:Disability Evaluation; D004651:Employment; D005069:Evaluation Studies as Topic; D005500:Follow-Up Studies; D006212:Hallucinations; D006801:Humans; D007406:Interview, Psychological; D008722:Methods; D008875:Middle Aged; D011379:Prognosis; D012559:Schizophrenia / Q000175:diagnosis*; D012934:Social Isolation