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Factor analysis of schizophrenic symptoms using the OPCRIT checklist
A G Cardno1, L A Jones, K C Murphy
1Department of Psychological Medicine, University of Wales College of Medicine, Heath Park, Cardiff, UK.
Schizophrenia Research
|December 15, 1996
Abstract:
Factor analysis was performed on OPCRIT checklist psychotic symptoms rated on 102 patients with DSM-III-R schizophrenia. An initial three-factor solution produced positive, negative, and disorganisation factors. However, application of the scree test suggested five substantive factors, with the positive factor dividing into three factors characterised, respectively, by paranoid symptoms, first rank delusions and first rank hallucinations.