Association between Depressed Mood and Sleep Duration among Various Ethnic Groups-The Helius Study

Background: We examined the association between depressed mood (DM) and sleep duration in a multi-ethnic population in Amsterdam, and the extent to which DM accounts for both short and long sleep. Methods: Cross-sectional data using 21,072 participants (aged 18-71 years) from the HELIUS study were analyzed. Sleep duration was classified as: short, healthy, and long (