alexa Maternal smoking and the risk of early weaning: a meta-analysis.


International Journal of School and Cognitive Psychology

Author(s): Horta BL, Kramer MS, Platt RW

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Abstract OBJECTIVES: This study reviewed evidence on the effect of maternal smoking on early weaning. METHODS: The following databases and journals were searched: Medline, Scientific Citation Index, Pediatrics, Journal of Pediatrics, New England Journal of Medicine, and Lancet. Analysis was restricted to studies in which infants who had never been breastfed were excluded or the prevalence of breastfeeding initiation was more than 90\%. RESULTS: In smoking vs nonsmoking mothers, the random effects odds ratio for weaning before 3 months was 1.93 (95\% confidence interval [CI] = 1.55, 2.40). An adjusted odds ratio of 1.50 (95\% CI = 1.34, 1.68) was shown in studies that had lost-to-follow-up rates below 15\% and included adequate adjustment for confounding. CONCLUSIONS: Maternal smoking increases the risk of early weaning.
This article was published in Am J Public Health and referenced in International Journal of School and Cognitive Psychology

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