Cited by 994Sleep and related disordersAnxiety, Depression, Psychometrics, Treatment, Cognitive ProcessesPsychometric Methodologies and Testing

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Psychometric assessment of subjective sleep quality using the Japanese version of the Pittsburgh Sleep Quality Index (PSQI-J) in psychiatric disordered and control subjects

Doi, Yuriko, Minowa, Masumi, Uchiyama, Makoto, Okawa, Masako, Kim, Keiko, Shibui, Kayo, Kamei, Yuichi·2000·Psychiatry Research

DOI 10.1016/s0165-1781(00)00232-8

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Abstract

Subjective sleep quality has been identified as an important clinical construct in psychiatric disordered patients. The Pittsburgh Sleep Quality Index (PSQI), one of the most widely used standardized measures to assess subjective sleep quality, generates a global score and scores seven components. The present study psychometrically assessed clinical profiles of subjective sleep quality in 82 control and 92 psychiatric disordered subjects (primary insomnia, n=14; major depression, n=30; generalized anxiety disorder, n=24; and schizophrenia, n=24), using the Japanese version of the Pittsburgh Sleep Quality Index (PSQI-J). The overall reliability coefficient of the PSQI-J was high (Cronbach's alpha=0.77). Correlation coefficients between the PSQI-J global and component scores were statistically significant. The PSQI-J global and component mean scores were significantly higher in psychiatric disordered subjects than control subjects, except for the component of sleep duration. Using a cut-off point of 5.5 in the PSQI-J global score, estimations of sensitivity and specificity provided 85.7 and 86.6% for primary insomnia, 80.0 and 86.6% for major depression, 83.3 and 86.6% for generalized anxiety disorder, and 83.3 and 86.6% for schizophrenia, respectively. The present study supports the utility of the PSQI-J as a reliable and valid measure for subjective sleep quality in clinical practice and research.

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Authors: Doi, Y., Minowa, M., Uchiyama, M., Okawa, M., Kim, K., Shibui, K., & Kamei, Y.
Affiliations: National Institute of Public Health (JP)
National Institute of Mental Health (JP)
National Center of Neurology and Psychiatry (JP)
Corresponding author: Doi, Yuriko
ORCID: Uchiyama, Makoto
Okawa, Masako
Kamei, Yuichi
Venue: Psychiatry Research
Publisher: Elsevier BV
Published: 2000-12
Volume: 97
Issue: 2-3
Pages: 165-172
ISSN: 0165-1781 (ISSN-L)
DOI: 10.1016/s0165-1781(00)00232-8
OpenAlex: W2076973235
Cited by: 992
References: 28
Citations by year: 2026: 55 · 2025: 101 · 2024: 95 · 2023: 87 · 2022: 86 · 2021: 78 · 2020: 80 · 2019: 51 · 2018: 41 · 2017: 44 · 2016: 33 · 2015: 24 · 2014: 38 · 2013: 38 · 2012: 24
FWCI: 5.93
Type: journal article
Language: en
Open access: closed
Licence: www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Locations: Psychiatry Research (publishedVersion)
PubMed (publishedVersion)
Funders: National Center of Neurology and Psychiatry
National Institutes of Health
Topics: Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
Social Sciences › Decision Sciences › Management Science and Operations Research › Psychometric Methodologies and Testing
Keywords: subjective sleep quality, Pittsburgh Sleep Quality Index, Japanese version, psychometric validation, mental illness, primary insomnia, major depressive disorder, generalized anxiety disorder, schizophrenia, sensitivity and specificity
MeSH terms: Adult, Analysis of Variance, Mental Disorders, Major Depressive Disorder, Female, Humans, Sleep Initiation and Maintenance Disorders, Male, Middle Aged, Psychometrics, Surveys and Questionnaires, Schizophrenia, Schizophrenic Psychology, Sensitivity and Specificity, Sleep Wake Disorders, Time Factors, Reproducibility of Results, Prevalence

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Psychometric assessment of subjective sleep quality using the Japanese version of the Pittsburgh Sleep Quality Index (PSQI-J) in psychiatric disordered and control subjects

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