Riho Wada    Department   Kawasaki University of Medical Welfare  ,    Position   Instructor
Article types	原著
Language	English
Peer review	Peer reviewed
Title	Validity and Reliability of the Japanese Version of the 12-item Self-administered World Health Organization Disability Assessment Schedule (WHODAS) 2.0 in Patients with Schizophrenia
Journal	Formal name：Acta Medica Okayama Abbreviation：Acta Med Okayama ISSN code：0386300X
Domestic / Foregin	Foregin
Volume, Issue, Page	75(3),pp.315-322
Author and coauthor	Riho Wada, Masaki Fujiwara, Yuto Yamada, Naoki Nakaya, Maiko Fujimori, Ryuhei So, Masafumi Kodama, Yuji Higuchi, Kyoko Kakeda, Yosuke Uchitomi, Norihito Yamada, Masatoshi Inagaki
Authorship	Lead author
Publication date	2021/06
Summary	It is necessary to assess functional impairment when treating schizophrenia. The World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0) has been adopted as a measure of functional disability in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition. This study was a secondary analysis from a cross-sectional study of health-related behaviors among patients with schizophrenia. We examined the validity and reliability of the Japanese version of the 12-item WHODAS 2.0 when self-administered by such patients. Participants were 350 outpatients with schizophrenia from a psychiatric hospital. The standard six-factor structure of the WHODAS 2.0 showed a good fit for these participants. The Cronbach's alpha coefficient was 0.858, showing good internal consistency. The WHODAS 2.0 showed moderate correlations with the modified Global Assessment of Functioning and Kessler 6 scales (r=-0.434 and 0.555, respectively). The results of this study show that the Japanese version of the 12-item self-administered WHODAS 2.0 has good internal consistency and convergent validity among patients with schizophrenia. Further exploration of the usefulness of WHODAS 2.0 in clinical settings is needed.
DOI	10.18926/AMO/62226
PMID	34176935