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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
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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“PSQI scores decreased at T2 and increased slightly at T3; however, these changes were not statistically significant, and mean values remained within the good sleep quality range [28].”
From Long-Term Changes Following Orthopedic Mandibular Advancement Therapy in Pediatric Obstructive Sleep Apnea: a 7-Year Follow-up Study (2026) · cites this paper as [28]
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Cites
Diagnostic and Statistical Manual of Mental Disorders
Williams, J. B. W., & First, M. B. (2013) · Oxford University Press eBooks · doi:10.1093/acrefore/9780199975839.013.104 · Cited by 109,845
Coefficient Alpha and the Internal Structure of Tests
Cronbach, L. J. (1951) · Psychometrika · doi:10.1007/bf02310555 · Cited by 43,931
The Pittsburgh Sleep Quality Index: a new instrument for psychiatric practice and research
Buysse, D. J., Reynolds, C. F., Monk, T. H., Berman, S. R., & Kupfer, D. J. (1989) · Psychiatry Research · doi:10.1016/0165-1781(89)90047-4 · Cited by 35,234
Health Measurement Scales: A Practical Guide to Their Development and Use
Streiner, D. L., Norman, G. R., & Cairney, J. (1989) · Cited by 9,595
Principles and Practice of Sleep Medicine
Kryger, M. H., Roth, T. G., & Dement, W. C. (2011) · Elsevier eBooks · doi:10.1016/c2009-0-59875-3 · Cited by 5,118
Epidemiologic study of sleep disturbances and psychiatric disorders. An opportunity for prevention?
Ford, D. E. (1989) · JAMA · doi:10.1001/jama.262.11.1479 · Cited by 2,440
Psychometric evaluation of the pittsburgh sleep quality index
Carpenter, J. S., & Andrykowski, M. A. (1998) · Journal of Psychosomatic Research · doi:10.1016/s0022-3999(97)00298-5 · Cited by 1,618
Principles and practice of sleep medicine
Sloan, E. P. (1995) · Journal of Psychosomatic Research · doi:10.1016/0022-3999(95)90167-1 · Cited by 1,388
Short and Long Sleep and Sleeping Pills: Is Increased Mortality Associated?
Kripke, D. F. (1979) · Archives of General Psychiatry · doi:10.1001/archpsyc.1979.01780010109014 · Cited by 660
Research works printed but not linked: 1
- Doi, 1999, A report from a community-based study on sleep disorders using the DSM-IV, Clinical Psychiatry, 41, 1071
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Items 901–994 of 994
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Construction and validation of the sleep ethogram
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Hosona, M., Uesugi, Y., & Sekido, K. (2025) · Open Journal of Nursing · doi:10.4236/ojn.2025.153012
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Sato, K., Okabe, S., Suzuki, Y., & Abe, T. (2025) · SLEEP Advances · doi:10.1093/sleepadvances/zpaf034
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Matsumoto, Y., Uchimura, N., Ishida, T., Ozone, M., Kumadaki, K., Hino, A., Otsuka, Y., Itani, O., & Kaneita, Y. (2025) · Sleep and Biological Rhythms · doi:10.1007/s41105-025-00600-0
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Tomioka, M., Matsunaga, Y., Ota, K., Endo, T., Ichikura, K., Fukase, Y., Tagaya, H., & Murayama, N. (2025) · Sleep and Biological Rhythms · doi:10.1007/s41105-025-00611-x
Pasandi, H. G., Khosravi, A., Emamian, M. H., Mousavi, S. A., Hashemi, H., & Fotouhi, A. (2025) · Global Epidemiology · doi:10.1016/j.gloepi.2025.100227
Kokubun, K., Yuan, D., Nemoto, K., & Yamakawa, Y. (2025) · Brain Research Bulletin · doi:10.1016/j.brainresbull.2025.111611
Tang, Z., Murayama, Y., Jiang, L., & Chen, W. (2025) · Electronics · doi:10.3390/electronics14224531
Endo, D., Akahoshi, T., Nagaoka, K., Hagiwara, E., Okamoto, Y., Nagata, Y., Hori, A., Ito, T., Uematsu, A., Watanabe, Y., et al. (2025) · Respiratory Medicine · doi:10.1016/j.rmed.2025.108523
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The role of dysfunctional beliefs about sleep in cognitive behaviour therapy for insomnia
Greenwood, K. M. (2024) · Swinburne figshare (Swinburne University of Technology) · doi:10.25916/sut.26294755
Izuhara, M., Matsui, K., Okubo, R., Yoshiike, T., Nagao, K., Kawamura, A., Tsuru, A., Utsumi, T., Hazumi, M., Sasaki, Y., et al. (2024) · Figshare · doi:10.6084/m9.figshare.26689862
Izuhara, M., Matsui, K., Okubo, R., Yoshiike, T., Nagao, K., Kawamura, A., Tsuru, A., Utsumi, T., Hazumi, M., Sasaki, Y., et al. (2024) · Figshare · doi:10.6084/m9.figshare.26689868
Steinmetz, C., Heinemann, S., Kutschka, I., Hasenfuss, G. P., Asendorf, T., Remppis, B. A., Knoglinger, E., Grefe, C., Albes, J. M., Baraki, H., et al. (2024) · Figshare · doi:10.6084/m9.figshare.26610546
Izuhara, M., Matsui, K., Okubo, R., Yoshiike, T., Nagao, K., Kawamura, A., Tsuru, A., Utsumi, T., Hazumi, M., Sasaki, Y., et al. (2024) · Figshare · doi:10.6084/m9.figshare.26689859
Umeno, S., 加藤, 千., Nagaura, Y., Kondo, H., & Eto, H. (2020) · Figshare · doi:10.6084/m9.figshare.12015222
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Hiki, M., Kattel, S. B., Sato, A., Matsumoto, H., Yatsu, S., Shitara, J., Murata, A., Suda, S., Kato, T., Tabuchi, H., et al. (2025) · Circulation Journal · doi:10.1253/circj.cj-25-0875
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Yaginuma-Shimizu, M., Nakamoto, I., Sunu, Z., Jia, L., & Ozaki, A. (2025) · Aging & Mental Health · doi:10.1080/13607863.2025.2606877
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Saha, K., Yoo, D. W., Swain, V. D., & Choudhury, M. D. (2026) · npj Digital Public Health · doi:10.1038/s44482-025-00005-3
Ban, W., Wu, F., Li, H., Zhou, S., Feng, S., Liu, C., Zhang, Z., & Huang, Y. (2026) · Research Square · doi:10.21203/rs.3.rs-8766171/v1
Cao, Y., Lee, J., Seol, J., Tsunoda, K., Shibuya, K., Yoon, J., Arai, T., & Okura, T. (2026) · Geriatrics · doi:10.3390/geriatrics11020032
ウミシオ, ワ., Umishio, W., & 海塩, 渉. (2018) · Institutional Repositories DataBase (IRDB)
Inoshita, A., Ishimizu, E., Ohba, S., Yuka, I. T. O., Kotajima, M., Shiroshita, N., Koiwai, H., Kawana, F., Kawagoe, I., Kasai, T., et al. (2026) · Auris Nasus Larynx · doi:10.1016/j.anl.2026.03.006
Nishikori, S. (n.d.) · Institutional Repositories DataBase (IRDB) · doi:10.34382/0002002188
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Sato¹, R., Kamohara, R., Matsuo¹, T., Ueda-Sawa, A., Okazaki, M., Hashimoto², S., Akiko, I.-M., Doki, K., Mukai³, Y., Homma³, M., et al. (2026) · Research Square · doi:10.21203/rs.3.rs-9849787/v1
Nemoto, T., Uchino, T., Ikeda, R., Nosaka, T., & Baba, K. (2026) · BMC Psychiatry · doi:10.1186/s12888-026-08397-z
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Nitta, C., Shibasaki, M., Urayama, Y., Yumoto, Y., Maesato, H., Muto, T., Amano, Y., Koga, Y., Toyama, T., So, R., et al. (2026) · Psychiatry and Clinical Neurosciences Reports · doi:10.1002/pcn5.70379
Takeuchi, Y., Yamane, K., Ninomiya, A., Maruyama, A., Ohsugi, H., Fukaya, T., Nakao, H., & Kaneya, S. (2026) · Research Square · doi:10.21203/rs.3.rs-10340173/v1
Togo, F., & Matsukuma, S. (2026) · Sleep Epidemiology · doi:10.1016/j.sleepe.2026.100159
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Yoshikawa, T., Obayashi, K., Miyata, K., Jimura, H., Saeki, K., Ogata, N., & Kase, S. (2026) · British Journal of Ophthalmology · doi:10.1136/bjo-2026-330121
Akbaş, E. S., & Karacaoğlu, P. (2026) · European Journal of Geriatrics and Gerontology · doi:10.4274/ejgg.galenos.2026.2025-11-10
Yamaguchi, D., Uehara, F., Tange, M., Kobayashi, C., Izawa, A., & Asano, Y. (2026) · Nursing Forum · doi:10.1155/nuf/5547518
Amorndoljai, P., Choothong, L., Techaoei, S., & Chaiprateep, E. (2026) · Journal of Health Research · doi:10.56808/2586-940x.1219
Ogawa, Y., Tanaka, H., Haga, D., Higashi, Y., Yokota, S., & Tano, K. (2026) · BMC Psychology · doi:10.1186/s40359-026-05694-w
dos Santos, E. B., Tornquist, D., Waclawovsky, A. J., Teixeira, J. A., Guimarães, M. E. A., Wearick‐Silva, L. E., Matias, T. S., da Silva, D. A., Monteiro-Júnior, R. S., Pires, D. A., et al. (2026) · Jornal Brasileiro de Psiquiatria · doi:10.1590/0047-2085-2025-0056
Kedoin, H., Itoh, Y., Nirengi, T., Sato, Y., Sugisawa, S., Nishio, Y., & Akitsu, R. (2026) · JMIR Formative Research · doi:10.2196/101615
Zhou, L., Shoji, Y., Kenmotsu, H., & Yada, Y. (2026) · Functional Foods in Health and Disease · doi:10.31989/ffhd.v16i10.2089
Matcha (Japanese ground green tea) and cognitive function
Lange, K. W., & NAKAMURA, Y. (2026) · Journal of Food Bioactives · doi:10.26599/jfb.2026.95035451
Kaji, R., Takeuchi, K., Okubo, S., & Yoshida, N. (2026) · The Journal of Strength and Conditioning Research · doi:10.1519/jsc.0000000000005706
Suga, A., Moriya, H., Kitamura, M., Kokubo, T., Tange, A., & Ohira, H. (2026) · Research Square · doi:10.21203/rs.3.rs-11113427/v1
Tainaka, H., Nagaya, S., Muramatsu, T., 井上潤, & Tanaka, S. (2026) · Research Square · doi:10.21203/rs.3.rs-11214873/v1
Michishita, R., Tanaka, H., Shimana, T., Nakata, S., Anzai, M., Oyama-Tsuda, E., Nakashima, S., Higaki, Y., & Uehara, Y. (2026) · The Journal of Physical Fitness and Sports Medicine · doi:10.7600/jpfsm.2026.015
Brooks, A. T. (2015) · University Libraries (University of Maryland) · doi:10.13016/m2503b
Metadata
- 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
- Venue
- Psychiatry Research
- Publisher
- Elsevier BV
- Published
- 2000-12
- Volume
- 97
- Issue
- 2-3
- Pages
- 165-172
- ISSN
- 0165-1781 (ISSN-L)
- 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
- 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
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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