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Interrater reliability of the Japanese version of the Positive and Negative Syndrome Scale and the appraisal of its training effect
Author(s) -
IGARASHI YOSHITO,
HAYASHI NAOKI,
YAMASHINA MITSURU,
OTSUKA NAOHISA,
KUROKI NORIOMI,
ANZAI NOBUO,
KAZAMATSURI HAJIME
Publication year - 1998
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1046/j.1440-1819.1998.00425.x
Subject(s) - inter rater reliability , positive and negative syndrome scale , intraclass correlation , psychology , cronbach's alpha , clinical psychology , schizophrenia (object oriented programming) , rating scale , concordance , reliability (semiconductor) , psychopathology , psychiatry , psychosis , psychometrics , medicine , developmental psychology , power (physics) , physics , quantum mechanics
The purpose of the present study is to test interrater reliability of the Japanese version of the Positive and Negative Syndrome Scale (PANSS) and to examine factors possibly affecting the reliability. The study group conducted the PANSS rating on 20 patients with DSM‐IV schizophrenia. For the analysis of interrater reliability, intraclass correlation coefficient (ICC) was calculated. The ICC for individual items of the PANSS ranged from 0.26 to 0.92, and those for the positive, negative, and general psychopathology subscales were 0.85, 0.83 and 0.75, respectively. The Cronbach's alpha coefficient for the subscales were 0.84, 0.87 and 0.76, respectively. The interrater reliability and the internal consistency were satisfactory and similar to those obtained in the antecedent studies. No salient training effect was found in a sequential analysis of the concordance rate. It is concluded that the Japanese version of the PANSS is a reliable and efficient tool for comprehensive assessment of the schizophrenic syndrome.