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PANSS-6: A brief rating scale for the measurement of severity in schizophrenia

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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  • Søren Dinesen Østergaard
  • Ole Lemming
  • Ole Mors
  • Christoph U. Correll
  • Per Bech
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Objective:
The 30-item Positive and Negative Syndrome Scale (PANSS-30) is the most widely used rating scale in schizophrenia, but too long for clinical use. Shorter PANSS versions have been proposed, including the PANSS-14 and PANSS-8. However, none of these PANSS versions has been validated using the parametric Rasch rating scale model, which evaluates “scalability”. Scalability means that each item in a rating scale provides unique information regarding syndrome severity, and is a statistical prerequisite for using the total-score as a measure of overall severity.
Method:
Based on data from two randomized placebo-controlled trials in schizophrenia, we tested the scalability of PANSS-30, PANSS-14 and PANSS-8 by means of the parametric Rasch rating scale model.
Furthermore, we tested whether a scalable PANSS version could separate efficacy of haloperidol and sertindole from placebo.
Results:
Neither PANSS-30, PANSS-14, nor PANSS-8 were scalable. However, PANSS-6, consisting of the items: P1-Delusions, P2-Conceptual disorganization, P3-Hallucinations, N1-Blunted Affect, N4-Social withdrawal, N6-Lack of spontaneity & flow of conversation, was scalable. Furthermore, PANSS-6 captured
superior symptom reduction, and higher remission rates during treatment with haloperidol and sertindole versus placebo.
Conclusion:
PANSS-6 is a short schizophrenia severity rating scale that adequately separates antipsychotic efficacy from that of placebo.
OriginalsprogEngelsk
TidsskriftActa Psychiatrica Scandinavica
Vol/bind133
Udgave nummer6
Sider (fra-til)436-444
Antal sider9
ISSN0001-690X
DOI
StatusUdgivet - 2016

ID: 45769494