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R. E. Kendell, MD, FRCP, MRCPsych; I. F. Brockington, MD, MRCP, MRCPsych; J. P. Leff, MD, MRCP, MRCPsych

Arch Gen Psychiatry. 1979;36(1):25-31.

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.

Author Affiliations
From the University Department of Psychiatry, Royal Edinburgh Hospital, Edinburgh, Scotland.

Footnotes
Accepted for publication April 10, 1978.

Read before the Scientific Symposium Honoring Eli Robins, MD, St Louis, May 27-28, 1977.

Reprints not available.

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