Peso ao nascer a partir do Sistema de Informações sobre Nascidos Vivos nos municípios de Cabedelo e Cacimbas, Paraíba: análise da tendência (1999-2007) e dos fatores associados (2007)

Abstract

Children with low weight at birth (under 2500g) show a much larger risk of becoming ill in the first year of life. Objective: This study identified the factors associated with low weight at birth and compared their occurrence in live born babies from mothers living in the municipalities of Cabedelo and Cacimbas, Paraíba, referring to the year 2007. We also described the evolution of weight at birth and its determining factors in the period from 1999 to 2007. Methodology: We conducted a descriptive study with secondary data from SINASC. The association strength between the independent variables and low birth weight at birth was expressed by Odds Ratio. For the differences between the proportions of low birth weight was used the proportion equality test. A multivariate model of logistic regression was used to identify the impact on low birth weight prevalence. Results: It was observed similar low birth weight prevalence in both studied municipalities. The pregnancy length from 22 to 36 weeks was the condition that behaved as a statistically significant discriminant regarding the risk of low birth weight occurrence, comparing both municipalities. The tendency analysis revealed that in the Cabedelo municipality, marital status, parity (live children) and pregnancy length showed significant associations with the evolution of low birth weight through the application of a hierarchical logistic model. Conclusion: The importance of studies on low birth weight comparing the occurrence of this outcome in different socioeconomic contexts is highlighted.