Insomnia: prevalence and its impact on excessive daytime sleepiness and psychological well-being in the adult Taiwanese population

Qual Life Res. 2008 Oct;17(8):1073-80. doi: 10.1007/s11136-008-9383-9. Epub 2008 Aug 28.


Objectives: This study examined the national age- and sex-specific prevalence rates of insomnia and excessive daytime sleepiness (EDS), the associations of insomnia symptoms with daytime consequences, and the impact of insomnia on EDS and psychological well-being.

Methods: Data of 36,743 men and women aged 18 years and above from the 2005 Survey of Social Development Trends-Health Security in Taiwan were analyzed.

Results: Over 25% of the Taiwanese adults experienced insomnia. Difficulty initiating sleep (14.6%) was the most common type of insomnia, followed by early morning awakening (13.9%) and difficulty maintaining sleep (13.4%). The risk of EDS was three times as high for individuals with insomnia as for those without (95% confidence interval of odds ratio: 2.77-3.71). Insomnia status predicted poor psychological well-being even after controlling for sociodemographic factors and health status.

Conclusions: Taiwanese adults had a high prevalence of insomnia. Insomnia contributed at least partially to an individual's psychological well-being.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adaptation, Psychological
  • Adolescent
  • Adult
  • Age Factors
  • Confidence Intervals
  • Disorders of Excessive Somnolence / epidemiology
  • Disorders of Excessive Somnolence / etiology*
  • Disorders of Excessive Somnolence / psychology
  • Female
  • Humans
  • Logistic Models
  • Male
  • Middle Aged
  • Multivariate Analysis
  • Odds Ratio
  • Prevalence
  • Psychometrics
  • Risk Factors
  • Sleep Initiation and Maintenance Disorders / complications
  • Sleep Initiation and Maintenance Disorders / epidemiology*
  • Sleep Initiation and Maintenance Disorders / psychology
  • Stress, Psychological / epidemiology
  • Stress, Psychological / etiology*
  • Stress, Psychological / psychology
  • Taiwan / epidemiology
  • Wakefulness*
  • Young Adult