Bed-Sharing at 3 Months and Breast-Feeding at 1 Year in Southern Brazil
Received 10 October 2008; received in revised form 16 February 2009; accepted 16 April 2009. published online 13 July 2009.
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Heidi L. Richardson, Adrian M. Walker, Rosemary S.C. Horne
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Objective
To investigate the association between bedsharing at age 3 months and breastfeeding (BF) at age 12 months.
Study design
Almost all children born in Pelotas, Brazil in 2004 (99.2%) were enrolled in a cohort study. At birth, age 3 months, and age 12 months, mothers were interviewed to gather information on sociodemographic, reproductive, BF, and bedsharing characteristics. Bedsharing was defined as habitual sharing of a bed between mother and child for the entire night or part of the night. The analysis was limited to children from single births who were breastfed at 3 months. Multivariate analyses were carried out using Poisson regression.
Results
Of 4231 live births, 2889 were breastfed at age 3 months. The prevalence of BF at age 12 months was 59.2% in the children who bedshared at 3 months and 44% in those who did not (adjusted prevalence ratio [PR] for weaning= 0.75; 95% confidence interval [CI] = 0.69-0.81; P < .001). Among children who were exclusively breastfed at 3 months, 75.1% of those who also bedshared were still breastfed at age 12 months, versus 52.3% of those who did not bedshare (adjusted PR = 0.63; 95% CI = 0.53- 0.75; P < .001). The adjusted PR was 0.74 (95% CI = 0.60-0.90; P = .003) in children who were predominantly breastfed and 0.83 (95% CI = 0.76-0.90; P < .001) in those who were partially breastfed.
Conclusions
Bedsharing at 3 months protected against weaning up to age 12 months.
aPostgraduate Program in Epidemiology, Federal University of Pelotas, Pelotas, RS, Brazil
bDepartment of Maternal-Child Health, Federal University of Pelotas, Pelotas, RS, Brazil
Reprint requests: Iná S. Santos, Postgraduate Program in Epidemiology, Department of Social Medicine, Faculty of Medicine, Federal University of Pelotas; Rua Marechal Deodoro 1160, 3rd floor, CEP 96020-220, Pelotas, RS, Brazil.
ABSTRACT