Sleep duration and hyperglycemia among obese and nonobese children aged 3 to 6 years

Abstract

Objective: To investigate the association between sleep duration and risk of hyperglycemia among preschool Chinese children. Design: A population-based cross-sectional study. Setting: Seventy-one randomly selected kindergartens in Tianjin, China. Participants: Six hundred nineteen obese (body mass index z score ≥1.65) and 617 nonobese (body mass index z score <1.65) children aged 3 to 6 years were recruited and matched by age. Main Exposure: Sleep duration. Main Outcome Measures: Hyperglycemia, defined as a fasting glucose level of 100 mg/dL or higher. Results: Obese children were more likely to have shorter sleep duration (≤8 hours) compared with their nonobese counterparts (P