Department of Global Health Promotion, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.
Department of Global Health Promotion, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.
Sleep Med. 2018 May;45:62-68. doi: 10.1016/j.sleep.2017.12.015. Epub 2018 Feb 7.
Childhood sleep habits are associated with mental health development; however, little is known about the impact of irregular bedtimes on the mental health of early school-aged children. The aims of this study were to examine the effect of weekday sleep habits (varying bedtimes depending on the night of the week and later than 22:00 h bedtime) on behavior problems, prosocial behavior, and resilience of children aged 6-7 years.
Data were taken from the Adachi Child Health Impact of Living Difficulty (A-CHILD) study, which involved the participation of 4291 caregivers of first-grade children (6-7 years old) living in Adachi City, Tokyo. Resilience (using the Children's Resilient Coping Scale), behavior problems (using the Strength and Difficulties Questionnaire), both modified to range 0-100, and sleep habits were measured via a questionnaire filled out by caregivers. Propensity-score matching was used to determine the associations between irregular and late bedtime, behavior problems, prosocial behavior, and resilience.
A total of 320 (7.5%) children showed irregular bedtime on school nights and 540 (13.6%) children went to bed later than 22:00 h. Children with irregular bedtimes on weekdays showed lower resilience (β = -3.50, 95% confidence interval (CI) = -5.90 to -1.10) and higher levels of behavior problems (β = 3.29, 95% CI = 1.13-5.46), especially hyperactivity/inattention (β = 5.76, 95% CI = 2.03 to 9.49) and peer relationship problems (β = 3.79, 95% CI = 1.02-6.55). On the other hand, no association between bedtime after 22:00 h and resilience or behavior problems was found.
Among early school-aged children, irregular bedtime on weekdays may be a risk factor for lower resilience and behavior problems.
儿童睡眠习惯与心理健康发展有关；然而，对于不规律的就寝时间对 6-7 岁儿童心理健康的影响知之甚少。本研究旨在探讨工作日睡眠习惯（根据一周中的夜晚不同而改变就寝时间，且晚于 22:00 就寝）对 6-7 岁儿童行为问题、亲社会行为和适应力的影响。
数据来自于东京足立区儿童生活困难对健康影响（A-CHILD）研究，该研究涉及 4291 名居住在足立区的一年级儿童（6-7 岁）的照顾者。使用儿童适应力量表（儿童适应力量表）测量适应力（范围为 0-100），采用经过修改的强项和困难问卷（Strength and Difficulties Questionnaire）测量行为问题。通过照顾者填写的问卷来测量睡眠习惯。采用倾向评分匹配来确定不规律和晚睡就寝时间与行为问题、亲社会行为和适应力之间的关联。
共有 320 名（7.5%）儿童在上学日的晚上就寝时间不规律，540 名（13.6%）儿童晚于 22:00 就寝。工作日就寝时间不规律的儿童适应力较低（β=-3.50，95%置信区间（CI）=-5.90 至-1.10），行为问题水平较高（β=3.29，95%CI=1.13-5.46），特别是多动/注意力不集中（β=5.76，95%CI=2.03-9.49）和同伴关系问题（β=3.79，95%CI=1.02-6.55）。另一方面，晚于 22:00 就寝时间与适应力或行为问题之间没有关联。
在 6-7 岁的儿童中，工作日不规律的就寝时间可能是适应力较低和行为问题的一个风险因素。
