The effect of sleep duration and satisfaction on injuries among adolescents

초록

Sleep duration has been declining among adults as well as adolescent. Sleep deprivation could be harm our health and injuries was suggested to be related to insufficient sleep. However, the influence of sleep deprivation on injuries during adolescence is still under exploration. Therefore, we tried to evaluate the influence of sleep duration and satisfaction on injuries among adolescents. We analyzed the data from the Tenth Korea Youth Risk Behavior Web-based Survey (KYRBS), 2014, which was designed and conducted by Korea Centers for Disease Control and Prevention. The representative sample was 400 middle schools and 400 high schools from the two-staged stratified cluster sampling method. Total number of respondents was 73,238 students with the response rate of 97.7%. Students answered the questions on the experience of injuries on school property, sleep duration and their satisfaction from sleep and the confounders. The adolescent reported that the average sleep durations in weekdays and weekend were 6.4 and 8.6 hours, respectively. 27.9% and 13.4% of the respondent felt dissatisfied and very dissatisfied with sleep duration, while those answering neutral, satisfied, very satisfied were 32.3%, 18.8% and 7.6%, respectively. In terms of injuries on school property, the risk of injuries increased as sleep duration and satisfaction decreased. Injuries increased by 7% if sleep duration decreased by 1 hour. Besides, they got injured 13%, 15%, 26% and 43% more than those very satisfied with their sleep duration if they felt satisfied, neutral, dissatisfied and very dissatisfied. Sleep duration and their satisfaction from sleep could independently contribute to injuries at school. Insufficient sleep could keep its influence on injuries through inattention controlling for demographic, sensation seeking behavior and physical activity.