Winnie Tso1, Nirmala Rao2, Fan Jiang3, Albert Martin Li4, So-Lun Lee1, Frederick Ka-Wing Ho1, Sophia Ling Li1, Patrick Ip5. 1. Department of Pediatrics and Adolescent Medicine, The University of Hong Kong, Hong Kong, China. 2. Faculty of Education, The University of Hong Kong, Hong Kong, China. 3. Department of Paediatrics, The Chinese University of Hong Kong, Hong Kong, China. 4. Shanghai Children's Medical Center, Shanghai, China. 5. Department of Pediatrics and Adolescent Medicine, The University of Hong Kong, Hong Kong, China. Electronic address: patricip@hku.hk.
Abstract
OBJECTIVES: To examine the average sleep duration in Chinese preschoolers and to investigate the association between sleep duration and school readiness. STUDY DESIGN: This is a cross-sectional study that included 553 Chinese children (mean age = 5.46 years) from 20 preschools in 2 districts of Hong Kong. Average daily sleep duration in the last week was reported by parents and school readiness as measured by the teacher-rated Chinese Early Development Instrument (CEDI). RESULTS: Most Chinese preschoolers had 9-10 hours of sleep per day. Only 11% of preschoolers had the recommended 11-12 hours of sleep per day. This group was associated with more "very ready" CEDI domains. Sleep deprivation (≤7 hours per day) was associated with a lower CEDI total score, lower scores in the emotional maturity and language/cognitive domain, and prosocial behaviors subdomain but a greater score in the hyperactivity/inattention subdomain. Children with a lower family socioeconomic index, lower maternal education level, infrequent parent-child interactions, and who used electronic devices for more than 3 hours per day had shortened sleep durations. CONCLUSIONS: Optimal sleep duration was associated with better school readiness in preschool children, whereas sleep deprivation was associated with lower school readiness, more hyperactivity and inattention, and less prosocial behavior.
OBJECTIVES: To examine the average sleep duration in Chinese preschoolers and to investigate the association between sleep duration and school readiness. STUDY DESIGN: This is a cross-sectional study that included 553 Chinese children (mean age = 5.46 years) from 20 preschools in 2 districts of Hong Kong. Average daily sleep duration in the last week was reported by parents and school readiness as measured by the teacher-rated Chinese Early Development Instrument (CEDI). RESULTS: Most Chinese preschoolers had 9-10 hours of sleep per day. Only 11% of preschoolers had the recommended 11-12 hours of sleep per day. This group was associated with more "very ready" CEDI domains. Sleep deprivation (≤7 hours per day) was associated with a lower CEDI total score, lower scores in the emotional maturity and language/cognitive domain, and prosocial behaviors subdomain but a greater score in the hyperactivity/inattention subdomain. Children with a lower family socioeconomic index, lower maternal education level, infrequent parent-child interactions, and who used electronic devices for more than 3 hours per day had shortened sleep durations. CONCLUSIONS: Optimal sleep duration was associated with better school readiness in preschool children, whereas sleep deprivation was associated with lower school readiness, more hyperactivity and inattention, and less prosocial behavior.
Authors: Shalini Paruthi; Lee J Brooks; Carolyn D'Ambrosio; Wendy A Hall; Suresh Kotagal; Robin M Lloyd; Beth A Malow; Kiran Maski; Cynthia Nichols; Stuart F Quan; Carol L Rosen; Matthew M Troester; Merrill S Wise Journal: J Clin Sleep Med Date: 2016-11-15 Impact factor: 4.062
Authors: Caroline P Hoyniak; John E Bates; Maureen E McQuillan; Angela D Staples; Isaac T Petersen; Kathleen M Rudasill; Victoria J Molfese Journal: J Child Psychol Psychiatry Date: 2020-03-15 Impact factor: 8.982
Authors: Catherine S Birken; Jessica A Omand; Kim M Nurse; Cornelia M Borkhoff; Christine Koroshegyi; Gerald Lebovic; Jonathon L Maguire; Muhammad Mamdani; Patricia C Parkin; Janis Randall Simpson; Mark S Tremblay; Eric Duku; Caroline Reid-Westoby; Magdalena Janus Journal: BMJ Open Date: 2019-11-19 Impact factor: 2.692