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Evaluating the Duration of Untreated Psychosis Using Medical Records Shinya ITO 1 , Tomonori HASEGAWA 1 , Kunichika MATSUMOTO 1 , Naohisa TSUJINO 2 , Nao TOHGI 2 , Masafumi MIZUNO 2 1Department of Social Medicine, Toho University School of Medicine, Tokyo, Japan 2Department of Neuropsychiatry, Toho University School of Medicine Keyword: Interrater concordance , DUP , duration of untreated psychosis , Schizophrenia , ICC , intra class correlation pp.559-562
Published Date 2011/6/15
DOI https://doi.org/10.11477/mf.1405101891
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 Objective:An early diagnosis of schizophrenia is crucial, and various studies have related a longer duration of untreated psychosis (DUP) to a worse prognosis. However, only a few studies have investigated the methodology of assessing DUP. The objective of this study is to identify interrater concordance in evaluating DUP.

 Methods:In this cross-sectional survey, 25 psychiatrists and 2 clinical psychologists, affiliated across 8 hospitals, evaluated the DUP of 20 different cases. The case scenarios were created using medical records of actual patients and were presented to the doctors using slides. There were allowed to ask questions necessary for assessing the DUP on the basis of the scenario.

 Results:The intra-class correlation among the 8 hospitals was 0.98 (95% confidence interval, 0.97-0.99). The intraclass correlation among the 27 participants was 0.96 (95% confidence interval, 0.93-0.98).

 Conclusions:Our results of the present study indicate that, when relatively detailed information is provided via medical records, psychiatrists and clinical psychologists can evaluate the DUP with a high interrater concordance.


Copyright © 2011, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-126X 印刷版ISSN 0488-1281 医学書院

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