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Effect of maternal job strain during pregnancy on infant neurodevelopment by gender at 6 and 12 months: Mothers and Children's Environmental Health (MOCEH) study

Title
Effect of maternal job strain during pregnancy on infant neurodevelopment by gender at 6 and 12 months: Mothers and Children's Environmental Health (MOCEH) study
Authors
Kim E.Park H.Hong Y.-C.Ha M.Kim Y.Lee B.-E.Ha E.-H.
Ewha Authors
하은희박혜숙김은정
SCOPUS Author ID
하은희scopus; 박혜숙scopusscopus; 김은정scopus
Issue Date
2015
Journal Title
Annals of Occupational and Environmental Medicine
ISSN
2052-4374JCR Link
Citation
Annals of Occupational and Environmental Medicine vol. 27, no. 1
Keywords
CognitionInfant neurodevelopmentJob strainPrenatal psychosocial stress
Publisher
BioMed Central Ltd.
Indexed
SCOPUS scopus
Document Type
Article
Abstract
Objectives: Limited evidence is available regarding the association between prenatal job strain and infant neurodevelopment. Most studies used stress indicators other than job strain to explain the relationship between prenatal maternal stress and child development. The objective of this study was to investigate the association between maternal job strain during pregnancy and neurodevelopment in infancy.Methods: Mothers and Children's Environmental Health (MOCEH) study, an on-going prospective birth cohort study, has been conducted in South Korea since 2006. Job strain during pregnancy was measured using Korean version of Job Content Questionnaire (JCQ). Infant neurodevelopment was assessed using Korean Bayley Scale of Infant Development II (K-BSID-II) at 6 and 12 months of age. A total of 343 mother-child pairs that completed JCQ and K-BSID-II more than once were included. Mental Developmental Index (MDI) and Psychomotor Developmental Index (PDI) defined in the K-BSID-II were used as outcome variables.Results: Compared to infants from mothers with low job strain, significant (p < 0.05) decreases in PDI were found in infants from mothers with active and passive job at 6 months of age. After stratification by infant sex, boys in the high strain group had a lower MDI score than boys in the low job strain group at 12 months. On the other hand, girls in the high strain and active groups had higher MDI scores than girls in the low job strain group at 12 months. PDI at 12 months also showed different results by sex. Boys in the high strain and passive job groups had lower PDI scores than boys in the low job strain group. However, such difference was not observed in girls.Conclusions: The findings of this study suggest that prenatal job strain affects infant neurodevelopment in a gender-dependent manner. © 2015 Kim et al.
DOI
10.1186/s40557-015-0059-y
Appears in Collections:
의과대학 > 의학과 > Journal papers
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