Kobayashi Katsuhiro, Yorifuji Takashi, Yamakawa Michiyo, Oka Makio, Inoue Sachiko, Yoshinaga Harumi, Doi Hiroyuki
Department of Child Neurology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences and Okayama University Hospital, Okayama, Japan.
Department of Human Ecology, Okayama University Graduate School of Environmental and Life Science, Okayama, Japan.
Brain Dev. 2015 Jun;37(6):572-8. doi: 10.1016/j.braindev.2014.10.004. Epub 2014 Oct 25.
Behavioral problems are often associated with poor sleep habits in children. We investigated whether undesirable toddler-age sleep schedules may be related to school-age behavioral problems.
We analyzed the data of a nationwide longitudinal survey with available results from 2001 to 2011. The participants were 41,890 children. The predictors were waking time and bedtime at 2years of age, and the outcomes were assessed by determining the presence or absence of three attention problems and four aggressiveness problems at 8years of age. In logistic regression models with adjustments for confounding factors, we estimated odds ratios (ORs) and confidence intervals (CIs) for the association between toddler sleep schedules and behavior during primary-school age years.
The outcomes of attention problems and aggressiveness problems were observed in 1.7% and 1.2% of children, respectively, at 8years of age. The OR of an irregular or late morning waking time at 2years of age with the outcome of aggressiveness problems was 1.52 (95% CI, 1.04-2.22) in comparison to an early waking time. The OR of an irregular or late bedtime with attention problems was 1.62 (95% CI, 1.12-2.36), and the OR of an irregular or late bedtime with aggressiveness problems was 1.81 (95% CI, 1.19-2.77) in comparison to an early bedtime.
Poor toddler-age sleep schedules were found to predict behavioral problems during primary-school age years. Thus, good and regular sleep habits appear to be important for young children's healthy development.
行为问题常与儿童不良睡眠习惯相关。我们调查了幼儿期不良的睡眠时间表是否可能与学龄期行为问题有关。
我们分析了一项全国性纵向调查的数据，该调查有2001年至2011年的可用结果。参与者为41890名儿童。预测因素为2岁时的起床时间和就寝时间，结果通过确定8岁时是否存在三种注意力问题和四种攻击性问题来评估。在对混杂因素进行调整的逻辑回归模型中，我们估计了幼儿睡眠时间表与小学年龄阶段行为之间关联的比值比（OR）和置信区间（CI）。
8岁儿童中，分别有1.7%和1.2%出现了注意力问题和攻击性问题。与早起时间相比，2岁时起床时间不规律或较晚且出现攻击性问题的OR为1.52（95%CI，1.04 - 2.22）。与早睡时间相比，就寝时间不规律或较晚且出现注意力问题的OR为1.62（95%CI，1.12 - 2.36），就寝时间不规律或较晚且出现攻击性问题的OR为1.81（95%CI，1.19 - 2.77）。
研究发现幼儿期不良的睡眠时间表可预测小学年龄阶段的行为问题。因此，良好且规律的睡眠习惯似乎对幼儿的健康发展很重要。
