Fatores associados ao baixo peso ao nascer em crianças do Rio Grande do Sul

Abstract

In this study were identified and quantified the risk factors associated to live births with low birth weight in Rio Grande do Sul, in 2011 using data from the Information System on Live Births. The prevalence of low birth weight (LBW) was 8.1%. By adjusting logistic regression, two models were proposed. For the first one, the predictors significant risk variables at 5% were: mothers aged 35 or more; nulliparous; with elementary school II or high school; legally separated or divorced; mothers who did not receive prenatal care; birth that occurred outside the hospital; prematurity; female and who had congenital anomaly. The protective effects variables were teenage mothers and who did not work outside the home. The type of delivery was included in the second model proposed, which was more appropriate to estimate the probability of a live birth born underweight. It was possible to conclude that it is important to consider effective actions to vulnerable groups aiming to reduce LBW rates, examining the strong association with infant mortality rates.