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Non-linear relationship between maternal work hours and child body weight: evidence from the Western Australian Pregnancy Cohort (Raine) Study

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Abstract
Using longitudinal data from the Western Australia Pregnancy Cohort (Raine) Study and both random-effects and fixed-effects models, this study examined the connection between maternal work hours and child overweight or obesity. Following children in two-parent families from early childhood to early adolescence, multivariate analyses revealed a non-linear and developmentally dynamic relationship. Among preschool children (ages 2 to 5), we found lower likelihood of child overweight and obesity when mothers worked 24 h or less per week, compared to when mothers worked 35 or more hours. This effect was stronger in low-to-medium income families. For older children (ages 8 to 14), compared to working 35-40 h a week, working shorter hours (1-24, 25-34) or longer hours (41 or more) was both associated with increases in child overweight and obesity. These non-linear effects were more pronounced in low-to-medium income families, particularly when fathers also worked long hours.
Item Type: | Article |
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Authors/Creators: | Li, J and Akaliyski, P and Schafer, J and Kendall, G and Oddy, WH and Stanley, F and Strazdins, L |
Keywords: | child BMI, family income, fathers' work hours, maternal work hours, obesity, overweight, Raine Study |
Journal or Publication Title: | Social Science & Medicine |
Publisher: | Pergamon-Elsevier Science Ltd |
ISSN: | 0277-9536 |
DOI / ID Number: | 10.1016/j.socscimed.2017.05.046 |
Copyright Information: | Copyright 2017 Elsevier Ltd. |
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