The CLASS Study (Circadian Light in Adolescence, Sleep and School): protocol for a prospective, longitudinal cohort to assess sleep, light, circadian timing and academic performance in adolescence.

Julia E StoneJoshua WileyEvangelos ChachosAnthony J HandSinh LuMonika RanitiElizabeth KlermanSteven W LockleyMary A CarskadonAndrew J K PhillipsBei BeiShantha M W Rajaratnamnull null

Published in: BMJ open (2022)

Recruitment occurred between October 2019 and September 2021, data collection from 2019 to 2023.

Keyphrases

physical activity
depressive symptoms
sleep quality
randomized controlled trial
electronic health record
cross sectional
big data