National trends in sleep sufficiency and sleep time among adolescents, including the late-COVID-19 pandemic, 2009-2022: a nationally representative serial study in South Korea

<p dir="ltr">South Korea has garnered a reputation for its high prevalence of sleep deprivation among adolescents (Choi et al., 2022). Given the profound health implications of sleep deprivation (Li et al., 2023; Ramar et al., 2021), the significance of sufficient sleep, especially among adolescents, cannot be overstressed. Recognizing these potential health ramifications among the population, the American Academy of Sleep Medicine (AASM) and the U.S. Centers for Disease Control and Prevention (CDC)’s Morbidity and Mortality Weekly Report (MMWR) have produced recommendations for sleep time in adolescents; both organizations have recommended adolescents to have eight to ten hours of sleep a day (Wheaton et al., 2018). With South Korea’s pre-existing challenges regarding adolescent sleep, understanding the potential compounded effects of the pandemic is crucial; by conducting this cross sectional, comprehensive analysis, it would be possible to derive actional insights to mitigate the negative impacts and promote healthier sleep behaviors amongst South Korean adolescents.</p>