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Updated: Aug 15, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
Published on: August 8, 2019
Sleep habits, excessive daytime sleepiness and school performance in high school students
Chol Shin1, Jinkwan Kim, Sangduck Lee
1Department of Respiratory Internal Medicine, Pulmonary Sleep Disorder Center, Ansan Hospital, Korea University Medical Center, Gyeonggi-Do, Seoul, Korea.
Abstract:
A questionnaire survey was carried out to examine the sleep habits and excessive daytime sleepiness (EDS) of 3871 high school students with a mean age of 16.8 years in Korea. The results showed that mean total sleep time was 6.3 h/day for male students and 6.5 h/day for female students, which may be insufficient for adolescence during puberty. The overall prevalence of EDS (defined as an Epworth sleepiness scale score of >10) was 15.9% (14.9% for boys and 18.2% for girls). The prevalence of EDS increased significantly (P < 0.001) with a decline in school performance.
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