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Nine months postpartum weight retention predictors for Brazilian women

Published online by Cambridge University Press:  02 January 2007

Gilberto Kac*
Affiliation:
Department of Social and Applied Nutrition, Institute of Nutrition, Federal University of Rio de Janeiro, Av. Brigadeiro Trompowsky s/n° – Bloco J – 2° andar, Rio de Janeiro, RJ 21941–590, Brazil
Maria HDA Benicio
Affiliation:
Department of Nutrition, School of Public Health, University of São Paulo, São Paulo, SP, Brazil
Gustavo Velásquez-Meléndez
Affiliation:
Department of Maternal and Pediatric Nursing and Public Health, School of Nursing, Federal University de Minas Gerais, Belo Horizonte, MG, Brazil
Joaquim G Valente
Affiliation:
Department of Epidemiology and Quantitative Methods in Health, National School of Public Health, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil Institute of Social Medicine, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
*
*Corresponding author: Email gkac@gbl.com.br
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Abstract

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Objective:

To identify factors potentially associated with weight retention measured 9 months after childbirth.

Design:

Prospective study with four follow-up waves in time (0.5, 2, 6 and 9 months postpartum).

Setting:

Rio de Janeiro, Brazil.

Subjects and methods:

Two hundred and sixty-six Brazilian women of childbearing age. Analysis was based on hierarchical logistic regression. The dependent variable was weight retention and was defined as the difference between weight at 9 months postpartum and pre-pregnancy weight, with a dichotomised cut-off at 7.5 kg. Covariates included demographic and socio-economic data, obstetric history, anthropometric data, and data on the infant. These data were grouped in blocks and ordered according to their influence on the dependent variable.

Results:

Of the women studied, 19.2% presented weight retention values ≥7.5 kg. According to the logistic regression analysis, the following variables remained associated with weight retention ≥7.5 kg: total family income, difficulty or inability to read a letter, age category ≥30 years, age at first childbirth <23 years, gestational weight gain ≥12 kg, body fat at baseline ≥30% and infant birth weight <3500 g. Infant hospitalisation was only marginally significant.

Conclusions:

Determinant factors identified by the analysis highlight the need for nutritional intervention policies during pregnancy and in the first months postpartum as a way of minimising obesity and the diseases resulting from it.

Type
Research Article
Copyright
Copyright © The Authors 2004

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