Physical growth and neurodevelopment during the first year of life: a cohort study of the Japan Environment and Children's Study.
Conditional growth modeling
Infant
Neurodevelopment
Physical growth
Journal
BMC pediatrics
ISSN: 1471-2431
Titre abrégé: BMC Pediatr
Pays: England
ID NLM: 100967804
Informations de publication
Date de publication:
25 08 2021
25 08 2021
Historique:
received:
08
04
2021
accepted:
19
07
2021
entrez:
26
8
2021
pubmed:
27
8
2021
medline:
14
9
2021
Statut:
epublish
Résumé
The association between a slower physical growth and poorer neurodevelopment has been established in infants born preterm or small for gestational age. However, this association is inconsistent in term-born infants, and detailed investigations in infancy, when intervention is most beneficial for improving outcomes, are lacking. We therefore examined this association separately by sex during the first year of life in term-born infants. Using data collected until children reached 12 months old in an ongoing prospective cohort of the Japan Environment and Children's Study, we analyzed 44,264 boys and 42,541 girls with singleton term-birth. The exposure variables were conditional variables that disentangle linear growth from weight gain relative to linear growth, calculated from the length and weight at birth and 4, 7 and 10 months old. Neurodevelopmental delay was identified using the Japanese-translated version of Ages & Stages Questionnaires, third edition. A reduced risk of neurodevelopmental delay at 6 months old was observed in children with a higher birth weight (adjusted relative risks [aRRs]: 0.91 and 0.93, 95 % confidence intervals [95 % CIs]: 0.87-0.96 and 0.88-0.98 in boys and girls, respectively) and increased linear growth between 0 and 4 months old (aRRs: 0.85 and 0.87, 95 % CIs: 0.82-0.88 and 0.83-0.91 in boys and girls, respectively). A reduced risk at 12 months was found in children with an increased linear growth between 0 and 4 months (aRRs: 0.92 and 0.90, 95 % CIs: 0.87-0.98 and 0.84-0.96 in boys and girls, respectively), boys with an increased relative weight gain between 0 and 4 months (aRR: 0.90, 95 % CI: 0.84-0.97), and girls with a higher birth weight (aRR: 0.89, 95 % CI: 0.83-0.96). These results suggest that a slow physical growth by four months old may be a predictor of neurodevelopmental delay during infancy.
Sections du résumé
BACKGROUND
The association between a slower physical growth and poorer neurodevelopment has been established in infants born preterm or small for gestational age. However, this association is inconsistent in term-born infants, and detailed investigations in infancy, when intervention is most beneficial for improving outcomes, are lacking. We therefore examined this association separately by sex during the first year of life in term-born infants.
METHODS
Using data collected until children reached 12 months old in an ongoing prospective cohort of the Japan Environment and Children's Study, we analyzed 44,264 boys and 42,541 girls with singleton term-birth. The exposure variables were conditional variables that disentangle linear growth from weight gain relative to linear growth, calculated from the length and weight at birth and 4, 7 and 10 months old. Neurodevelopmental delay was identified using the Japanese-translated version of Ages & Stages Questionnaires, third edition.
RESULTS
A reduced risk of neurodevelopmental delay at 6 months old was observed in children with a higher birth weight (adjusted relative risks [aRRs]: 0.91 and 0.93, 95 % confidence intervals [95 % CIs]: 0.87-0.96 and 0.88-0.98 in boys and girls, respectively) and increased linear growth between 0 and 4 months old (aRRs: 0.85 and 0.87, 95 % CIs: 0.82-0.88 and 0.83-0.91 in boys and girls, respectively). A reduced risk at 12 months was found in children with an increased linear growth between 0 and 4 months (aRRs: 0.92 and 0.90, 95 % CIs: 0.87-0.98 and 0.84-0.96 in boys and girls, respectively), boys with an increased relative weight gain between 0 and 4 months (aRR: 0.90, 95 % CI: 0.84-0.97), and girls with a higher birth weight (aRR: 0.89, 95 % CI: 0.83-0.96).
CONCLUSIONS
These results suggest that a slow physical growth by four months old may be a predictor of neurodevelopmental delay during infancy.
Identifiants
pubmed: 34433439
doi: 10.1186/s12887-021-02815-9
pii: 10.1186/s12887-021-02815-9
pmc: PMC8385793
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
360Investigateurs
Michihiro Kamijima
(M)
Shin Yamazaki
(S)
Yukihiro Ohya
(Y)
Reiko Kishi
(R)
Nobuo Yaegashi
(N)
Koichi Hashimoto
(K)
Chisato Mori
(C)
Shuichi Ito
(S)
Zentaro Yamagata
(Z)
Hidekuni Inadera
(H)
Takeo Nakayama
(T)
Hiroyasu Iso
(H)
Masayuki Shima
(M)
Youichi Kurozawa
(Y)
Narufumi Suganuma
(N)
Koichi Kusuhara
(K)
Takahiko Katoh
(T)
Informations de copyright
© 2021. The Author(s).
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