Factors associated with survival of very-low-birth-weight infants in a Brazilian fee-paying maternity in the 1990s

This study describes intra-hospital survival rates of very-low-birth-weight infants, as well as factors present at birth associated with survival, during a period of 10 years. This is a Retrospective cohort study performed in a 3rd level nursery at Santa Joana Maternity Hospital, a fee-paying institution in São Paulo, Brazil. From January 1991 to December 2000, 963 live-born infants with a birth weight of 500-1499 g, without congenital anomalies, were followed until discharge. Survival was studied according with year of birth, and stratified by birth weight and gestational age. Factors present at birth associated with survival were analyzed by logistic regression. Patient characteristics were: birth weight 500-999 g (38%), gestational ages = 750 g, and gestational age >= 26 weeks.Universidade Federal de São Paulo, Div Neonatol Med, Dept Pediat, São Paulo, BrazilSanta Joana Hosp & Matern, São Paulo, BrazilUniversidade Federal de São Paulo, Div Neonatol Med, Dept Pediat, São Paulo, BrazilWeb of Scienc