Fig. 2From: Associations between gestational age and childhood sleep: a national retrospective cohort studyAssociations of gestational age with daily sleep hours. Legend: Associations of gestational age with daily sleep hours: A Compared with full-term birth, preschool children born very-preterm, moderate-preterm, late-preterm, early-term and post-term were associated with lower daily sleep hours, all p < 0.01. B A fit spline described an inverse U-shape relationship of gestational age (weeks) with daily sleep hours (hours/day)Back to article page