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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: Yasumitsu-Lovell, Kahoko, Thompson, Lucy, Fernell, Elisabeth, Eitoku, Masamitsu, Suganuma, Narufumi, Gillberg, Christopher
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8136702/
https://www.ncbi.nlm.nih.gov/pubmed/34014944
http://dx.doi.org/10.1371/journal.pone.0251581
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author Yasumitsu-Lovell, Kahoko
Thompson, Lucy
Fernell, Elisabeth
Eitoku, Masamitsu
Suganuma, Narufumi
Gillberg, Christopher
author_facet Yasumitsu-Lovell, Kahoko
Thompson, Lucy
Fernell, Elisabeth
Eitoku, Masamitsu
Suganuma, Narufumi
Gillberg, Christopher
author_sort Yasumitsu-Lovell, Kahoko
collection PubMed
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.
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spelling pubmed-81367022021-06-02 Birth month and infant gross motor development: Results from the Japan Environment and Children’s Study (JECS) Yasumitsu-Lovell, Kahoko Thompson, Lucy Fernell, Elisabeth Eitoku, Masamitsu Suganuma, Narufumi Gillberg, Christopher PLoS One Research Article 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. Public Library of Science 2021-05-20 /pmc/articles/PMC8136702/ /pubmed/34014944 http://dx.doi.org/10.1371/journal.pone.0251581 Text en © 2021 Yasumitsu-Lovell et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Yasumitsu-Lovell, Kahoko
Thompson, Lucy
Fernell, Elisabeth
Eitoku, Masamitsu
Suganuma, Narufumi
Gillberg, Christopher
Birth month and infant gross motor development: Results from the Japan Environment and Children’s Study (JECS)
title 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_short 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)
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8136702/
https://www.ncbi.nlm.nih.gov/pubmed/34014944
http://dx.doi.org/10.1371/journal.pone.0251581
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