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Cited by 242Sleep and related disordersSleep and Work-Related FatigueCircadian rhythm and melatonin

Sleep Patterns and Total Mortality: A 12-Year Follow-up Study in Japan

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Kojima, Masayo, Wakai, Kenji, Kawamura, Takashi, Tamakoshi, Akiko, Aoki, Rie, Lin, Yingsong, Nakayama, Toshiko, Horibe, Hiroshi +2 more·2000·Journal of Epidemiology
DOI 10.2188/jea.10.87
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Abstract

A population-based cohort study was conducted to assess the relationship between total mortality and self-reported sleep patterns as regards not only to sleep duration but also subjective sleep quality. A total of 5,322 inhabitants in Gifu Prefecture, Japan, completed a self-administered questionnaire on health status and lifestyles including habitual sleep patterns, and were followed-up for an average of 11.9 years. Relative risks were computed by using Cox proportional hazards models. Both longer and shorter sleep, compared to 7-8 hour-sleep, was related to significantly increased risk of total mortality in males (relative risk [RR] for > or = 10 hours = 1.94, and RR for < 7 hour = 1.90), but not in females. Females complaining of poor awakening state experienced a higher mortality risk compared to those who woke up normally (RR: 1.97). Males who usually fell asleep easily showed a marginally lower mortality risk compared to those who fell asleep normally (RR: 0.70). Female users of sleeping pills were at an elevated risk (RR: 1.89). These findings were almost unchanged after adjustment for sleep duration and other confounders. Poor self-reported quality of sleep seemed to be associated with an increased risk of mortality independently of sleep duration.

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  • Self-reported sleep duration is widely used in epidemiologic studies and is the basis of research on the relation between sleep duration and mortality.

    “Self-reported sleep duration is widely used in epidemiologic studies and is the basis of research on the relation between sleep duration and mortality (13)(14)(15)(16)(17)(18)(19).”

    From Sleep Duration in the United States: A Cross-sectional Population-based Study (2009) · cites this paper as [13]

  • Sleep durations longer or shorter than 7-8 hours in a 24-hour period are associated with cardiovascular disease and diabetes risk factors, depression, automobile and workplace accidents, learning and memory problems, and excess mortality.

    “Sleep duration is associated with cardiovascular disease and diabetes risk factors, depression, automobile and workplace accidents, and prospective mortality.”

    From Sleep Duration in the United States: A Cross-sectional Population-based Study (2009) · cites this paper as [13]

  • Many covariates have established relations with the risk of death and might account for the relation between sleep duration and mortality.

    “Many of our covariates have established relations with the risk of death (25,65) and might account for the relation between sleep duration and mortality (13)(14)(15)(16)(17)(18).”

    From Sleep Duration in the United States: A Cross-sectional Population-based Study (2009) · cites this paper as [13]

  • Self-reported sleep duration reliably predicts prospective mortality and other health outcomes.

    “self-reported sleep duration reliably predicts prospective mortality and other health outcomes (1-7, 13-18).”

    From Sleep Duration in the United States: A Cross-sectional Population-based Study (2009) · cites this paper as [13]

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Research works printed but not linked: 1

  1. Bliwise DL, Friedman L, Yesavage JA. Depression as a confounding variable in the estimation of habitual sleep time. J Clin Psychol, 1993; 49: 471-477.

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Authors
Kojima, M., Wakai, K., Kawamura, T., Tamakoshi, A., Aoki, R., Lin, Y., Nakayama, T., Horibe, H., Aoki, N., & Ohno, Y.
Affiliations
  • Nagoya University (JP)
  • Kyoto University (JP)
  • Sugiyama Jogakuen University (JP)
  • Hamamatsu University (JP)
ORCID
Venue
Journal of Epidemiology
Publisher
Japan Epidemiological Association
Published
2000
Volume
10
Issue
2
Pages
87-93
ISSN
0917-5040 (ISSN-L)
DOI
10.2188/jea.10.87
OpenAlex
W2038302027
Cited by
241
References
39
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2023: 8 · 2022: 8 · 2021: 8 · 2020: 14 · 2019: 8 · 2018: 10 · 2017: 11 · 2016: 14 · 2015: 19 · 2014: 10 · 2013: 14 · 2012: 9
FWCI
10.80
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Journal of Epidemiology (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
Keywords
sleep patterns, all-cause mortality, sleep duration, subjective sleep quality, sleep onset, hypnotics, sex differences, Gifu Prefecture
MeSH terms
Adult, Aged, Attitude to Health, Female, Follow-Up Studies, Health Status, Humans, Hypnotics and Sedatives, Japan, Life Style, Male, Middle Aged, Mortality, Population Surveillance, Risk Factors, Sex Factors, Sleep, Sleep Wake Disorders, Time Factors, Cohort Studies, Confounding Factors, Epidemiologic, Multivariate Analysis, Chi-Square Distribution, Proportional Hazards Models, Sleep-Wake Transition Disorders

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