Factor analysis of schizophrenic symptoms using the OPCRIT checklist.
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.
Cardno
A G
AG
Department of Psychological Medicine, University of Wales College of Medicine, Heath Park, Cardiff, UK.
Jones
L A
LA
Murphy
K C
KC
Asherson
P
P
Scott
L C
LC
Williams
J
J
Owen
M J
MJ
McGuffin
P
P
D000328:Adult; D000342:Affective Symptoms / Q000145:classification / Q000175:diagnosis / Q000523:psychology; D000368:Aged; D005163:Factor Analysis, Statistical; D005260:Female; D006212:Hallucinations / Q000145:classification / Q000175:diagnosis / Q000523:psychology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011569:Psychiatric Status Rating Scales / Q000706:statistics & numerical data*; D011594:Psychometrics; D012559:Schizophrenia / Q000145:classification / Q000175:diagnosis* / Q000235:genetics; D012562:Schizophrenia, Disorganized / Q000145:classification / Q000175:diagnosis / Q000523:psychology; D012563:Schizophrenia, Paranoid / Q000145:classification / Q000175:diagnosis / Q000523:psychology; D012565:Schizophrenic Psychology