Maternal smoking during pregnancy and birth defects in children: A systematic review with meta-analysis

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Abstract

This systematic review aimed to investigate the association between maternal smoking during pregnancy and birth defects in children. We performed an electronic search of observational studies in the databases ovid MEDLINE (1950 to April 2010), LILACS and SciELO. We included 188 studies with a total of 13,564,914 participants (192,655 cases). Significant positive associations were found between maternal smoking and birth defects in the following body systems: cardiovascular (OR: 1.11; 95%CI: 1.03-1.19), digestive (OR: 1.18; 95%CI: 1.07-1.30), musculoskeletal (OR: 1.27; 95%CI: 1.16-1.39) and face and neck (OR: 1.28; 95%CI: 1.19-1.37). The strength of association between maternal smoking and birth defects measured by the OR (95%CI) is significantly related to the amount of cigarettes smoked daily (χ2 = 12.1; df = 2; p = 0.002). In conclusion, maternal smoking during pregnancy is associated with congenital malformations in children and this association is dose-dependent.

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APA

Nicoletti, D., Appel, L. D., Neto, P. S., Guimarães, G. W., & Zhang, L. (2014). Maternal smoking during pregnancy and birth defects in children: A systematic review with meta-analysis. Cadernos de Saude Publica. Fundacao Oswaldo Cruz. https://doi.org/10.1590/0102-311X00115813

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