TY - JOUR
T1 - Poor toddler-age sleep schedules predict school-age behavioral disorders in a longitudinal survey
AU - Kobayashi, Katsuhiro
AU - Yorifuji, Takashi
AU - Yamakawa, Michiyo
AU - Oka, Makio
AU - Inoue, Sachiko
AU - Yoshinaga, Harumi
AU - Doi, Hiroyuki
N1 - Funding Information:
Kobayashi was supported by a Research Grant for Nervous and Mental Disorders from the Ministry of Health, Labour and Welfare, Japan (24–7) and by a Grant-in-Aid from the Ministry of Education, Culture, Sports, Science, and Technology , Japan (No. 24591513 ). Yorifuji and Yamakawa were supported by Health and Labour Sciences Research Grants on Health Research on Children, Youth and Families, Japan (No. H24-Jisedai-Ippan-004 ). Yorifuji was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science, and Technology , Japan (No. 2379066203 ). Yoshinaga was supported in part by the Japan Epilepsy Research Foundation . Doi was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science, and Technology , Japan (No. 24510033 ).
Publisher Copyright:
© 2014 The Japanese Society of Child Neurology.
PY - 2015/6/1
Y1 - 2015/6/1
N2 - Objective: 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. Methods: 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 2. years of age, and the outcomes were assessed by determining the presence or absence of three attention problems and four aggressiveness problems at 8. years 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. Results: The outcomes of attention problems and aggressiveness problems were observed in 1.7% and 1.2% of children, respectively, at 8. years of age. The OR of an irregular or late morning waking time at 2. years 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. Conclusion: 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.
AB - Objective: 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. Methods: 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 2. years of age, and the outcomes were assessed by determining the presence or absence of three attention problems and four aggressiveness problems at 8. years 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. Results: The outcomes of attention problems and aggressiveness problems were observed in 1.7% and 1.2% of children, respectively, at 8. years of age. The OR of an irregular or late morning waking time at 2. years 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. Conclusion: 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.
KW - ADHD
KW - Behavioral disorders
KW - Children
KW - Sleep habits
KW - Survey
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U2 - 10.1016/j.braindev.2014.10.004
DO - 10.1016/j.braindev.2014.10.004
M3 - Article
C2 - 25459967
AN - SCOPUS:84928295585
VL - 37
SP - 572
EP - 578
JO - Brain and Development
JF - Brain and Development
SN - 0387-7604
IS - 6
ER -