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Arch Gen Psychiatry. 1984 Feb;41(2):149-54.

Outcome of schizophrenic subtypes defined by four diagnostic systems.

Abstract

This report examines the short- and long-term outcome of the subtypes of schizophrenia as defined by four diagnostic systems: DSM-III, Research Diagnostic Criteria, Ninth Revision of the International Classification of Diseases, and the Tsuang-Winokur (T-W) criteria. Patients were from the Iowa 500 study and met Washington University criteria for schizophrenia. Subtype diagnosis was based on extensive chart material reviewed by investigators blind to outcome. Short-term outcome, based on chart information, and long-term outcome, based on individual field follow-up, were both better for paranoid than for nonparanoid schizophrenia, the difference being greatest using the T-W criteria. The difference in outcome between paranoid and nonparanoid schizophrenia was greater at long-term than at short-term follow-up, and greater using residential and occupational than psychiatric outcome criteria. Outcome did not differ for the two common forms of nonparanoid schizophrenia: hebephrenic and undifferentiated. The subtyping of schizophrenia has important predictive validity, which was greatest using the T-W criteria.

PMID:
6696596
[PubMed - indexed for MEDLINE]
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