Birth month and infant gross motor development: Results from the Japan Environment and Children's Study (JECS).

The association between birth month and neurodevelopmental or psychiatric disorders has been investigated in a number of previous studies; however, the results have been inconsistent. This study investigated the association between birth month and child gross motor development at 6 and 12 months of...

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Autores principales:	Kahoko Yasumitsu-Lovell, Lucy Thompson, Elisabeth Fernell, Masamitsu Eitoku, Narufumi Suganuma, Christopher Gillberg, Japan Environment and Children’s Study Group
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6591c39d5e1b47ca9b229a91fb4342e0
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id	oai:doaj.org-article:6591c39d5e1b47ca9b229a91fb4342e0
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spelling	oai:doaj.org-article:6591c39d5e1b47ca9b229a91fb4342e02021-11-25T06:23:46ZBirth month and infant gross motor development: Results from the Japan Environment and Children's Study (JECS).1932-620310.1371/journal.pone.0251581https://doaj.org/article/6591c39d5e1b47ca9b229a91fb4342e02021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0251581https://doaj.org/toc/1932-6203The association between birth month and neurodevelopmental or psychiatric disorders has been investigated in a number of previous studies; however, the results have been inconsistent. This study investigated the association between birth month and child gross motor development at 6 and 12 months of age in a large cohort of infants (n = 72,203) participating in the Japan Environment and Children's Study (JECS). Gross motor development was assessed using the Ages and Stages Questionnaire (ASQ-3). At 6 months and 12 months, 20.7% and 14.2%, respectively, had ASQ-3 indications of gross motor problems. Birth month was strongly associated with gross motor development at both time points, particularly at 6 months. Summer-born infants had the worst outcomes at both 6 months and 12 months of age. This outcome applied to the ASQ-3 score itself and to the adjusted Relative Risk (aRR), with the highest aRRs (relative to January-born) among August-born (aRR 2.51; 95%CI 2.27-2.78 at 6 months), and June-born (aRR 1.84; 95%CI 1.63-2.09 at 12 months). Boys had better scores than girls both at 6 and 12 months of age. We speculate that seasonal factors-such as maternal vitamin D deficiency and influenza infection-affecting the fetus in early pregnancy might account for the findings.Kahoko Yasumitsu-LovellLucy ThompsonElisabeth FernellMasamitsu EitokuNarufumi SuganumaChristopher GillbergJapan Environment and Children’s Study GroupPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 5, p e0251581 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kahoko Yasumitsu-Lovell Lucy Thompson Elisabeth Fernell Masamitsu Eitoku Narufumi Suganuma Christopher Gillberg Japan Environment and Children’s Study Group Birth month and infant gross motor development: Results from the Japan Environment and Children's Study (JECS).
description	The association between birth month and neurodevelopmental or psychiatric disorders has been investigated in a number of previous studies; however, the results have been inconsistent. This study investigated the association between birth month and child gross motor development at 6 and 12 months of age in a large cohort of infants (n = 72,203) participating in the Japan Environment and Children's Study (JECS). Gross motor development was assessed using the Ages and Stages Questionnaire (ASQ-3). At 6 months and 12 months, 20.7% and 14.2%, respectively, had ASQ-3 indications of gross motor problems. Birth month was strongly associated with gross motor development at both time points, particularly at 6 months. Summer-born infants had the worst outcomes at both 6 months and 12 months of age. This outcome applied to the ASQ-3 score itself and to the adjusted Relative Risk (aRR), with the highest aRRs (relative to January-born) among August-born (aRR 2.51; 95%CI 2.27-2.78 at 6 months), and June-born (aRR 1.84; 95%CI 1.63-2.09 at 12 months). Boys had better scores than girls both at 6 and 12 months of age. We speculate that seasonal factors-such as maternal vitamin D deficiency and influenza infection-affecting the fetus in early pregnancy might account for the findings.
format	article
author	Kahoko Yasumitsu-Lovell Lucy Thompson Elisabeth Fernell Masamitsu Eitoku Narufumi Suganuma Christopher Gillberg Japan Environment and Children’s Study Group
author_facet	Kahoko Yasumitsu-Lovell Lucy Thompson Elisabeth Fernell Masamitsu Eitoku Narufumi Suganuma Christopher Gillberg Japan Environment and Children’s Study Group
author_sort	Kahoko Yasumitsu-Lovell
title	Birth month and infant gross motor development: Results from the Japan Environment and Children's Study (JECS).
title_short	Birth month and infant gross motor development: Results from the Japan Environment and Children's Study (JECS).
title_full	Birth month and infant gross motor development: Results from the Japan Environment and Children's Study (JECS).
title_fullStr	Birth month and infant gross motor development: Results from the Japan Environment and Children's Study (JECS).
title_full_unstemmed	Birth month and infant gross motor development: Results from the Japan Environment and Children's Study (JECS).
title_sort	birth month and infant gross motor development: results from the japan environment and children's study (jecs).
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/6591c39d5e1b47ca9b229a91fb4342e0
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Birth month and infant gross motor development: Results from the Japan Environment and Children's Study (JECS).

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