Association Between Sleep Duration and Intelligence Quotient in 6-Year-Old Children
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Association Between Sleep Duration and Intelligence Quotient in 6-Year-Old Children. / Lee, Kyung-Shin; Kim, Johanna Inhyang; Choi, Yoon-Jung; Cho, Jinwoo; Lim, Youn-Hee; Kim, Bung-Nyun; Shin, Choong Ho; Lee, Young Ah; Hong, Yun-Chul.
I: International Journal of Behavioral Medicine, Bind 29, 2022, s. 57–68 .Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Association Between Sleep Duration and Intelligence Quotient in 6-Year-Old Children
AU - Lee, Kyung-Shin
AU - Kim, Johanna Inhyang
AU - Choi, Yoon-Jung
AU - Cho, Jinwoo
AU - Lim, Youn-Hee
AU - Kim, Bung-Nyun
AU - Shin, Choong Ho
AU - Lee, Young Ah
AU - Hong, Yun-Chul
PY - 2022
Y1 - 2022
N2 - BACKGROUND: Sufficient sleep during childhood is important for cognitive functions such as learning and successful school performance. This study aimed to investigate the effects of sleep duration on the intelligence quotient (IQ) of 6-year-old children and aimed to analyze whether these effects differed by sex.METHODS: The IQ of 538 6-year-old Korean participants from the cohort study, "The Environment and Development of Children," was measured during follow-up using the Korean Educational Developmental Institute's Wechsler Intelligence Scale for Children. The total, verbal, and performance IQ scores were evaluated. The relationship between sleep duration and IQ scores after adjusting for maternal age, maternal educational level, maternal occupation, maternal IQ, exposure to secondhand smoking, gestational age, and monthly age and birth season was also assessed.RESULTS: Longer sleep duration was significantly associated with improved verbal IQ measures (β 0.55; p value 0.030). After stratifying participants by sex, a significant association was observed between sleep duration and total, verbal, and performance IQ scores in boys (total IQ 2.49, p value 0.012; verbal IQ 0.75, p value: 0.037; performance IQ 0.73, p value 0.048), but not in girls.CONCLUSIONS: The results indicated that only boys show a significant association between IQ scores and sleep duration. These findings support the hypothesis that sleep duration is associated with IQ, in a sex dependent manner. Future studies are needed for a thorough evaluation of the connection between sleep duration and health outcome in young children.
AB - BACKGROUND: Sufficient sleep during childhood is important for cognitive functions such as learning and successful school performance. This study aimed to investigate the effects of sleep duration on the intelligence quotient (IQ) of 6-year-old children and aimed to analyze whether these effects differed by sex.METHODS: The IQ of 538 6-year-old Korean participants from the cohort study, "The Environment and Development of Children," was measured during follow-up using the Korean Educational Developmental Institute's Wechsler Intelligence Scale for Children. The total, verbal, and performance IQ scores were evaluated. The relationship between sleep duration and IQ scores after adjusting for maternal age, maternal educational level, maternal occupation, maternal IQ, exposure to secondhand smoking, gestational age, and monthly age and birth season was also assessed.RESULTS: Longer sleep duration was significantly associated with improved verbal IQ measures (β 0.55; p value 0.030). After stratifying participants by sex, a significant association was observed between sleep duration and total, verbal, and performance IQ scores in boys (total IQ 2.49, p value 0.012; verbal IQ 0.75, p value: 0.037; performance IQ 0.73, p value 0.048), but not in girls.CONCLUSIONS: The results indicated that only boys show a significant association between IQ scores and sleep duration. These findings support the hypothesis that sleep duration is associated with IQ, in a sex dependent manner. Future studies are needed for a thorough evaluation of the connection between sleep duration and health outcome in young children.
U2 - 10.1007/s12529-021-09996-8
DO - 10.1007/s12529-021-09996-8
M3 - Journal article
C2 - 34080127
VL - 29
SP - 57
EP - 68
JO - International Journal of Behavioral Medicine
JF - International Journal of Behavioral Medicine
SN - 1070-5503
ER -
ID: 270716161