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Cadernos de Saúde Pública

Print version ISSN 0102-311XOn-line version ISSN 1678-4464

Abstract

SILVA, Ana Maria Rigo; ALMEIDA, Marcia Furquim de; MATSUO, Tiemi  and  SOARES, Darli Antonio. Risk factors for pre-term birth in Londrina, Paraná State, Brazil. Cad. Saúde Pública [online]. 2009, vol.25, n.10, pp.2125-2138. ISSN 0102-311X.  http://dx.doi.org/10.1590/S0102-311X2009001000004.

The objective of this study was to identify risk factors associated with pre-term birth among live births in a hospital in Londrina, Paraná State, Brazil. Cases consisted of 328 pre-term births, and controls were 369 births with gestational age greater than 37 weeks. A multiple hierarchical logistic regression analysis was carried out. There was a significant correlation (p < 0.05) between pre-term birth and the following variables: socioeconomic status (slum residence); low age of head-of-family; maternal BMI < 19 or > 30 kg/m2; history of prematurity; history of assisted reproduction; mothers in a relationship for less than two years; maternal stress; weekly maternal alcohol consumption; insufficient prenatal care; gestational complications such as bleeding, genital tract infection, altered amniotic fluid volume, high blood pressure, and hospital admission; and twin pregnancy. Regular walks during pregnancy were a protective factor. Improved quality of prenatal care and the identification of the above factors during pregnancy may help reduce premature birth.

Keywords : Premature Birth; Pregnancy; Risk Factors; Case-Control Studies.

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