关键词: 儿童, 夜间睡眠时间, 影响因素

Abstract: AbstractObjectiveTo investigate nighttime sleep in children aged 6 to 12 years in Zhongshan city,and identify related factors to nighttime sleep. MethodsFrom November to December of 2005,2012 children in one school,aged 6 to 12 years,were investigated with questionnaire about children's social environment and sleep condition in Zhongshan city. ResultsActually 1936 children(1043 boys,893 girls)were investigated.The average time of nighttime sleep in 6~12 year-old children was (9.10±0.57)hours in regular time,and (9.47±0.81)hours at weekend(t=16.437，P=0.000).With the age increasing,the time of nighttime sleep in regular time decreased gradually,being 9.28h,9.27h,9.04h,9.04h,8.96h and 8.85h in 6,7,8,9,10 and 11-year old children.But the time of nighttime sleep in these children at weekends was not significantly different.Children's sleep time was affected mainly by 7 main factors:parents consideration of whether their sleep time was enough or not,children's age,the population number in the family,children's sleep time being regular,fosters' sleep time,frequently falling asleep while watching TV,father’s education degree(r=0.261，F=60.683，P=0.000). ConclusionThe nighttime sleep in children aged 6 to 12 years in Zhongshan city is less than foreign countries.Children’s age and family social environment are the main affecting factors.To ensure the children’s health,the parent’s knowledge of sleeping in the children must be improved.

Key words: Related factors , Nighttime sleep