Average sleep time for children

Mean sleep time of 493 healthy Swiss children enrolled in the Zurich Longitudinal Studies, based on parent report^[1]. Error bars represent ±2 standard deviations (which includes 97% of the population). The dashed red lines represent the lower and upper limit of recommended sleep time for each age group, established by the American Academy of Sleep Medicine (AASM)^[2] and endorsed by the American Academy of Pediatrics (AAP).