The factor structure for the Positive and Negative Syndrome Scale (PANSS) in recent-onset psychosis

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dc.contributor.authorEmsley R.
dc.contributor.authorRabinowitz J.
dc.contributor.authorTorreman M.
dc.contributor.authorSchooler N.
dc.contributor.authorKapala L.
dc.contributor.authorDavidson M.
dc.contributor.authorMcGory P.
dc.date.accessioned2011-05-15T16:02:23Z
dc.date.available2011-05-15T16:02:23Z
dc.date.issued2003
dc.description.abstractThe Positive and Negative Syndrome Scale (PANSS) is a widely used instrument for measuring severe psychopathology in adult patients with schizophrenia. Data, primarily on chronic patients, have been used to define factors for the PANSS. The present study examines the PANSS factor structure in a large sample of subjects with recent-onset schizophrenia, schizophreniform disorder and schizoaffective disorder who had been exposed to very limited antipsychotic medication. Equamax factor analysis was conducted on PANSS baseline assessments from a multicenter, 11 country drug trial that enrolled 535 patients. The forced five-factor solution essentially corresponds to the factors most frequently described previously, namely negative, positive, disorganized (or cognitive), excited and anxiety/depression. In the exploratory analysis, a seven-factor solution was obtained, with depression and anxiety symptoms separating and a motor component emerging. The results of this study partially support the use of a five-factor model for the PANSS, but suggest that scales for catatonia, depressive and anxiety syndromes should be included in future studies. © 2002 Elsevier Science B.V. All rights reserved.
dc.description.versionArticle
dc.identifier.citationSchizophrenia Research
dc.identifier.citation61
dc.identifier.citation1
dc.identifier.issn9209964
dc.identifier.other10.1016/S0920-9964(02)00302-X
dc.identifier.urihttp://hdl.handle.net/10019.1/12443
dc.subjecthaloperidol
dc.subjectneuroleptic agent
dc.subjectrisperidone
dc.subjectadult
dc.subjectanxiety
dc.subjectarticle
dc.subjectclinical trial
dc.subjectcontrolled clinical trial
dc.subjectcontrolled study
dc.subjectdepression
dc.subjectdouble blind procedure
dc.subjectfactorial analysis
dc.subjectfemale
dc.subjecthuman
dc.subjectmajor clinical study
dc.subjectmale
dc.subjectmulticenter study
dc.subjectonset age
dc.subjectpositive and negative syndrome scale
dc.subjectpriority journal
dc.subjectpsychologic test
dc.subjectpsychosis
dc.subjectrandomized controlled trial
dc.subjectschizoaffective psychosis
dc.subjectschizophrenia
dc.subjectschizophreniform disorder
dc.subjectsymptomatology
dc.subjectAdult
dc.subjectAntipsychotic Agents
dc.subjectFactor Analysis, Statistical
dc.subjectFemale
dc.subjectHumans
dc.subjectMale
dc.subjectPsychotic Disorders
dc.subjectQuestionnaires
dc.subjectSchizophrenia
dc.subjectSchizophrenic Psychology
dc.subjectSeverity of Illness Index
dc.titleThe factor structure for the Positive and Negative Syndrome Scale (PANSS) in recent-onset psychosis
dc.typeArticle
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