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Sleep habits and excessive daytime sleepiness correlate with injury risks in the general population in Taiwan
  1. Ying-Yeh Chen1,2,
  2. Kevin Chien-Chang Wu3,4
  1. 1Taipei City Psychiatric Center, Taipei City Hospital, Taipei, Taiwan
  2. 2Department of Public Health and Institute of Public Health, National Yang-Ming University, Taipei, Taiwan
  3. 3Department of Social Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
  4. 4Department of Psychiatry, National Taiwan University Hospital, Taipei Taiwan
  1. Correspondence to Dr Kevin Chien-Chang Wu, Department of Social Medicine, College of Medicine, National Taiwan University, 2nd Floor, Medical Humanity Building, No 1 Ren-Ai Road Sec 1, Taipei City 100, Taiwan; ccwu88{at}


Objective To explore the relationship between sleeping habits, excessive daytime sleepiness (EDS), and different injury risks in the general population of Taiwan.

Design Cross-sectional national data from the Taiwan Social Trend Survey conducted in 2005 by interviews using validated inventories.

Setting Population-based face-to-face interviews at participants' residences.

Participants 36 473 Taiwanese citizens aged 15 years or older.

Exposure Measures Self-reported EDS was measured using the Epworth sleepiness scale. Other sleep-related problems investigated included self-reported sleep quality (assessed by the insomnia self-assessment inventory) and self-reported inadequate sleep duration (<7 h).

Main Outcome Measures Self-reported major injuries that required medical attention.

Results Considering all sleep-related problems together, multivariate logistic regression analyses showed that EDS and poor sleep quality were significant predictors of higher risks of various injuries. EDS predicted major traffic injuries (odds ratio (OR) 1.62, 95% CI 1.29 to 2.02) and major fall injuries (OR 1.49, 95% CI1.20 to 1.84). Those with poor sleep quality tended to have traffic injuries (OR 1.67, 95% CI 1.41 to 1.99) and major fall injuries (OR 1.73, 95% CI 1.44 to 2.07).

Conclusions EDS and sleep quality are associated with the occurrence of a variety of injuries in Taiwan's general population.

  • fall
  • sleepiness
  • sleep quality
  • traffic crash

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  • Competing interests None.

  • Ethics approval This study was conducted with the approval of the National Taiwan University Hospital Research Ethics Committee, case no 200907022R. The study is a secondary data analysis and did not involve any contacts with subjects.

  • Provenance and peer review Not commissioned; externally peer reviewed.