Impact of chronotype, insomnia symptoms, sleep duration, and electronic devices on nonrestorative sleep and daytime sleepiness among Japanese adolescents

Prevalence rates of nonrestorative sleep and excessive daytime sleepiness among Japanese adolescents were 54.9% and 39.4%, respectively.

• Evening chronotype is associated with an increased likelihood of nonrestorative sleep and excessive daytime sleepiness.
• Difficulty initiating sleep is linked to a higher risk of experiencing nonrestorative sleep.
• Short sleep duration, specifically less than 5 hours or 5-6 hours, is associated with nonrestorative sleep.
• Using electronic devices just before bedtime may contribute to both nonrestorative sleep and excessive daytime sleepiness.
• Early morning awakening is associated with an increased likelihood of excessive daytime sleepiness.

AI simplified