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Cited by 524Sleep and related disordersObstructive Sleep Apnea ResearchSleep and Work-Related Fatigue

An epidemiological study of insomnia among the Japanese general population

Kim, Kyuja, Uchiyama, Makoto, Okawa, Masako, Liu, Xianchen, Ogihara, Ryuji·2000·Sleep
DOI 10.1093/sleep/23.1.1a
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Abstract

The study examined the prevalence and correlates of insomnia in a representative sample (n=3030) from the general population of Japan. Using a structured questionnaire, we found that the overall prevalence of insomnia during the preceding month was 21.4%, including difficulty initiating sleep (DIS: 8.3%), difficulty maintaining sleep (DMS: 15.0%), and early morning awakening (EMA: 8.0%). Multiple logistic regression analysis showed that older age, being unemployed, lack of habitual exercise, poor perceived health, psychological stress, and being unable to cope with stress were associated with an increased prevalence of insomnia. These findings indicate that the prevalence of insomnia in the general population of Japan is comparable to that reported in Western countries, and that insomnia is associated with multiple psychosocial factors.

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Crossref · 10.1093/sleep/23.1.1a

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Authors
Kim, K., Uchiyama, M., Okawa, M., Liu, X., & Ogihara, R.
Affiliations
  • National Center of Neurology and Psychiatry (JP)
  • Japan Health Promotion and Fitness Foundation (JP)
Corresponding author
Uchiyama, Makoto
ORCID
Venue
Sleep
Publisher
Oxford University Press (OUP)
Published
2000-01
Volume
23
Issue
1
Pages
1-7
ISSN
  • 0161-8105 (ISSN-L)
  • 1550-9109
DOI
10.1093/sleep/23.1.1a
OpenAlex
W1511171690
Cited by
524
References
0
Citations by year
2026: 5 · 2025: 9 · 2024: 15 · 2023: 19 · 2022: 26 · 2021: 28 · 2020: 27 · 2019: 17 · 2018: 29 · 2017: 24 · 2016: 26 · 2015: 30 · 2014: 28 · 2013: 33 · 2012: 31
FWCI
15.63
Type
journal article
Language
en
Open access
closed
Locations
  • SLEEP (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
  • Health Sciences › Medicine › Physiology › Obstructive Sleep Apnea Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
Keywords
insomnia, insomnia prevalence, difficulty initiating sleep, difficulty maintaining sleep, early morning awakening, psychosocial risk factors, psychological stress, stress coping, unemployment, physical activity, health perception, aging, Japanese population
MeSH terms
Adult, Aged, Cross-Sectional Studies, Cross-Cultural Comparison, Female, Health Surveys, Humans, Sleep Initiation and Maintenance Disorders, Japan, Life Style, Male, Middle Aged, Regression Analysis, Risk Factors, Stress, Psychological, Incidence

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