title: [Risk factors associated with very low birth weight in a low-income population].
abstract: This study aimed to identify risk factors associated with very low birth weight in a general hospital in Caxias do Sul, Rio Grande do Sul State, Brazil. This was a case-control study of 200 newborns with birth weight from 500 to 1,499 g (cases) and 400 with birth weight from 3,000 to 3,999 g (controls). Infants were from singleton pregnancies, and their mother had received prenatal care at public health services. The dependent variable was birth weight, and independent variables included socioeconomic status, schooling, and gestational and birth status. Univariate and multivariate analyses were performed with a 5% level of significance. Mortality in very low birth weight newborns was 32.5%. The limits of viability were 600 g for birth weight and 26 weeks for gestational age. Variables related to very low birth weight were: maternal age > 35 years (p = 0.01), lack of prenatal care (p < 0.0001), illness during the index pregnancy (p = 0.03), maternal hypertension (p = 0.007), hospitalization during pregnancy (p < 0.0001), and prior history of low birth weight (p < 0.0001). Many premature births were due to avertable factors.
authors.affiliation: Hospital Geral de Caxias do Sul, Universidade de Caxias do Sul, Rua Orestes Baldisserotto 931, Caxias do Sul, RS 95032, Brazil. bfaraujo@terra.com.br
authors.forename: Breno Fauth de
authors.initials: BF
authors.lastname: Araújo
authors.forename: Ana Cristina d'Andretta
authors.initials: AC
authors.lastname: Tanaka
mesh_terms: D000704:Analysis of Variance; D001938:Brazil / Q000453:epidemiology; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D007182:Income; D007226:Infant Mortality; D007229:Infant Welfare / Q000706:statistics & numerical data*; D007231:Infant, Newborn; D007234:Infant, Premature; D019102:Infant, Very Low Birth Weight; D008423:Maternal Age; D008429:Maternal Welfare / Q000706:statistics & numerical data*; D009035:Mothers / Q000706:statistics & numerical data; D011203:Poverty / Q000706:statistics & numerical data; D012307:Risk Factors; D012923:Social Class
vernacular_title: Fatores de risco associados ao nascimento de recém-nascidos de muito baixo peso em uma população de baixa renda.