Volume 37 - Article 22 | Pages 709–726
Parental nonstandard work schedules during infancy and children’s BMI trajectories
|Date received:||10 Oct 2016|
|Date published:||19 Sep 2017|
|Keywords:||body mass index, cohort studies, employment, family structure, United Kingdom|
|Additional files:||readme.37-22 (text file, 201 Byte)|
|demographic-research.37-22 (zip file, 2 kB)|
Background: Empirical evidence has demonstrated adverse associations between parental nonstandard work schedules (i.e., evenings, nights, or weekends) and child developmental outcomes. However, there are mixed findings concerning the relationship between parental nonstandard employment and children’s body mass index (BMI), and few studies have incorporated information on paternal work schedules.
Objective: This paper investigated BMI trajectories from early to middle childhood (ages 3–11) by parental work schedules at 9 months of age, using nationally representative cohort data from the United Kingdom. This study is the first to examine the link between nonstandard work schedules and children’s BMI in the United Kingdom.
Methods: We used data from the Millennium Cohort Study (2001‒2013, n = 13,021) to estimate trajectories in BMI, using data from ages 3, 5, 7, and 11 years. Joint parental work schedules and a range of biological, socioeconomic, and psychosocial covariates were assessed in the initial interviews at 9 months.
Results: Compared to children in two-parent families where parents worked standard shifts, we found steeper BMI growth trajectories for children in two-parent families where both parents worked nonstandard shifts and children in single-parent families whose mothers worked a standard shift. Fathers’ shift work, compared to standard shifts, was independently associated with significant increases in BMI.
Conclusions: Future public health initiatives focused on reducing the risk of rapid BMI gain in childhood can potentially consider the disruptions to family processes resulting from working nonstandard hours.
Contribution: Children in families in which both parents work nonstandard schedules had steeper BMI growth trajectories across the first decade of life. Fathers’ nonstandard shifts were independently associated with increases in BMI.
Afshin Zilanawala - University of Nottingham, United Kingdom
Jessica Abell - University College London (UCL), United Kingdom
Steven Bell - University of Cambridge, United Kingdom
Elizabeth Webb - University College London (UCL), United Kingdom
Rebecca Lacey - University College London (UCL), United Kingdom
Other articles by the same author/authors in Demographic Research
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