0905 Sleep Health & Depression Severity in Teens: Which Sleep Variables Are Most Relevant? – Data from the National Sleep Foundation Sleep in America® Poll

Abstract Introduction Understanding which specific aspects of sleep are most strongly related to depression symptoms in adolescents can inform public health prevention and intervention efforts. Methods Data were collected as part of the National Sleep Foundation Sleep in America® Poll. The random, population-based sample included N=1,097 teens who provided complete data. Depression symptoms were assessed with the PHQ8 scale, evaluated categorically (Minimal, Mild, Moderate-Severe). Sleep variables included weekday and weekend total sleep time, bedtime, and wake time, days/week feeling rested, with difficulty falling asleep, staying asleep, sleepiness, taking sleep-promoting medications, and sleep impacting daytime function (coded 0-7), diagnosed sleep disorder, talked to doctor about sleep, and perceived sleep need. Regression analyses adjusted for age, gender, race/ethnicity, and socioeconomics. Bonferonni correction (0.05/18) was used. Results Across the sample, 61.6% of teens reported minimal depressive symptoms, 23.5% mild, and 14.8% moderate-severe depressive symptoms. Elevated likelihood of mild depression was found for fewer days/week feeling rested and more days/week difficulty falling asleep, difficulty staying asleep, sleep impacting daytime function, and sleepiness. Elevated likelihood of mild depression was also associated with greater perceived sleep need and sleep deficit. Elevated likelihood of moderate-severe depression was found for shorter weekday sleep duration, later bedtime, fewer days/week feeling rested, and more days/week difficulty falling asleep, difficulty staying asleep, sleep impacting daytime function, sleepiness, and taking sleep-promoting medications; it was also associated with sleep disorder diagnosis, and greater sleep deficit. Conclusion These findings reinforce that both nighttime sleep characteristics and daytime consequences of poor sleep are central to adolescent mood health. Public health initiatives, including broad awareness campaigns and integrating brief screening for sleep difficulties or potential sleep disorders into school health assessments—and improving referral pathways to behavioral or medical sleep interventions—could provide a pragmatic route to improving both sleep and mental health outcomes at scale. Efforts to improve teen mental health may benefit from addressing not only sleep duration but also sleep quality, consistency, and perceived restfulness. Support (if any) R01MD011600, R01MH135978