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[Epidemiology of sleep disorders]
Nihon Rinsho. Japanese Journal of Clinical Medicine
|March 21, 1998
Summary
Severe sleep problems affect over 18% of men and 20% of women in Japanese hospital outpatients. Persistent insomnia and sleep breathing disorders are significant concerns, impacting public health.
Area of Science:
- Sleep Medicine
- Public Health
- Epidemiology
Context:
- Reviews global sleep disorder research, focusing on Japan.
- Highlights findings from a 1995 national research project on sleep disorders.
- Utilizes data from 11 general hospitals in Japan.
Purpose:
- To review and present data on insomnia, sleep breathing disorders, and circadian rhythm sleep disorders in Japan.
- To quantify the prevalence of severe sleep problems and persistent insomnia among Japanese outpatients.
- To estimate the prevalence of obstructive sleep apnea syndrome and circadian rhythm sleep disorders in the general Japanese population.
Summary:
- A 1995 report indicated 18.7% of male and 20.3% of female outpatients in Japan experienced severe sleep problems, with 11.7% suffering from persistent insomnia.
- Okada et al. reported a 3.28% prevalence of obstructive sleep apnea syndrome in Japanese men.
- A telephone and self-reported questionnaire survey estimated the prevalence of circadian rhythm sleep disorders at 0.44% in the Japanese general population.
Impact:
- Underscores the significant burden of sleep disorders in Japan.
- Provides crucial epidemiological data for public health initiatives and clinical practice.
- Identifies specific sleep disorders requiring further attention and intervention strategies.