Maternal occupation during pregnancy, birth weight, and length of gestation: Combined analysis of 13 European birth cohorts
Journal article
Casas, M., Cordier, Sylvaine, Martínez, David, Barros, Henrique, Bonde, Jens Peter, Burdorf, Alex, Costet, Nathalie, dos Santos, Ana Cristina, Danileviciute, Asta, Eggesbø, Merete, Fernandez, Mariana F., Fevotte, Joelle, García, Ana M., Gražulevičienė, Regina, Hallner, Eva, Hanke, Wojciech, Kogevinas, Manolis, Kull, Inger, Larsen, Pernille Stemann, ... Vrijheid, M.. (2015). Maternal occupation during pregnancy, birth weight, and length of gestation: Combined analysis of 13 European birth cohorts. Scandinavian Journal of Work Environment and Health. 41(4), pp. 384 - 396. https://doi.org/10.5271/sjweh.3500
Authors | Casas, M., Cordier, Sylvaine, Martínez, David, Barros, Henrique, Bonde, Jens Peter, Burdorf, Alex, Costet, Nathalie, dos Santos, Ana Cristina, Danileviciute, Asta, Eggesbø, Merete, Fernandez, Mariana F., Fevotte, Joelle, García, Ana M., Gražulevičienė, Regina, Hallner, Eva, Hanke, Wojciech, Kogevinas, Manolis, Kull, Inger, Larsen, Pernille Stemann, Melaki, Vasiliki, Monfort, Christine, Nordby, Karl-Christian, Andersen, Anne-Marie Nybo, Patelarou, Evridiki, Polanska, Kinga, Richiardi, Lorenzo, Marina, Loreto Santa, Snijder, Claudia, Tardón, Adonina, van Eijsden, M., Vrijkotte, T. G. M., Zugna, D., Nieuwenhuijsen, Mark J. and Vrijheid, M. |
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Abstract | Objectives: We assessed whether maternal employment during pregnancy – overall and in selected occupational sectors – is associated with birth weight, small for gestational age (SGA), term low birth weight (LBW), length of gestation, and preterm delivery in a population-based birth cohort design. Methods: We used data from > 200 000 mother-child pairs enrolled in 13 European birth cohorts and compared employed versus non-employed women. Among employees, we defined groups of occupations representing the main sectors of employment for women where potential reproductive hazards are considered to be present. The comparison group comprised all other employed women not included in the occupational sector being assessed. We performed meta-analyses of cohort-specific estimates and explored heterogeneity. Results: Employees had a lower risk of preterm delivery than non-employees [adjusted odds ratio (ORadj) 0.86, 95% confidence interval (95% CI) 0.81–0.91]. Working in most of the occupational sectors studied was not associated with adverse birth outcomes. Being employed as a nurse was associated with lower risk SGA infants (ORadj 0.91, 95% CI 0.84–0.99) whereas food industry workers had an increased risk of preterm delivery (ORadj 1.50, 95% CI 1.12–2.02). There was little evidence for heterogeneity between cohorts. Conclusions: This study suggests that, overall, employment during pregnancy is associated with a reduction in the risk of preterm birth and that work in certain occupations may affect pregnancy outcomes. This exploratory study provides an important platform on which to base further prospective studies focused on the potential consequences of maternal occupational exposures during pregnancy on child development. |
Keywords | birth cohort; birth weight; cohort study; Europe; European birth cohort; length of gestation; low birth weight; maternal occupation; meta-analysis; pregnancy; preterm delivery; small for gestational age |
Year | 2015 |
Journal | Scandinavian Journal of Work Environment and Health |
Journal citation | 41 (4), pp. 384 - 396 |
Publisher | Nordic Association of Occupational Safety and Health (NOROSH) |
ISSN | 0355-3140 |
Digital Object Identifier (DOI) | https://doi.org/10.5271/sjweh.3500 |
Scopus EID | 2-s2.0-84938875177 |
Open access | Open access |
Page range | 384 - 396 |
Research Group | Mary MacKillop Institute for Health Research |
Publisher's version | |
Place of publication | Finland |
https://acuresearchbank.acu.edu.au/item/874q4/maternal-occupation-during-pregnancy-birth-weight-and-length-of-gestation-combined-analysis-of-13-european-birth-cohorts
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