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Published on: October 3, 2018
Sleep Duration and School Readiness of Chinese Preschool Children
Winnie Tso1, Nirmala Rao2, Fan Jiang3
1Department of Pediatrics and Adolescent Medicine, The University of Hong Kong, Hong Kong, China.
Insights
Most Chinese preschoolers sleep less than recommended, impacting school readiness. Optimal sleep duration is linked to better development, while insufficient sleep correlates with hyperactivity and inattention.
Area of Science:
- Pediatric Sleep Medicine
- Child Development
- Educational Psychology
Background:
- Preschool sleep duration is crucial for cognitive and emotional development.
- Understanding sleep patterns in Chinese preschoolers is essential for early intervention.
- School readiness is a key indicator of future academic success.
Purpose of the Study:
- To determine the average sleep duration among Chinese preschoolers.
- To investigate the relationship between sleep duration and school readiness in this population.
- To identify factors associated with shortened sleep duration in young children.
Main Methods:
- Cross-sectional study involving 553 Chinese preschoolers (mean age 5.46 years) from 20 Hong Kong preschools.
- Parent-reported average daily sleep duration over the past week.
- Teacher-rated Chinese Early Development Instrument (CEDI) assessed school readiness.
Main Results:
- Only 11% of preschoolers met the recommended 11-12 hours of sleep daily; most slept 9-10 hours.
- Optimal sleep duration correlated with higher "very ready" scores across CEDI domains.
- Sleep deprivation (≤7 hours) was linked to lower overall CEDI scores, poorer emotional maturity and language/cognitive skills, reduced prosocial behavior, and increased hyperactivity/inattention.
- Shorter sleep durations were associated with lower socioeconomic status, lower maternal education, less parent-child interaction, and >3 hours of daily electronic device use.
Conclusions:
- Optimal sleep duration is positively associated with enhanced school readiness in preschoolers.
- Sleep deprivation in preschoolers is linked to diminished school readiness, increased hyperactivity/inattention, and fewer prosocial behaviors.
- Factors like socioeconomic status, parental education, and screen time influence preschooler sleep duration, highlighting targets for intervention.
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.
