• In an analysis of all singleton births and neonatal deaths with known birth weights and gestational ages in New York City maternity services during a three-year period (1976 to 1978), intensive care services at the hospital of birth were found to influence mortality only in preterm (<37 weeks' gestation) or low-birth-weight infants (<2251 g). By contrast, for infants who were born at term and of normal birth weight, mortality rates did not differ by level of perinatal care available at the hospital of birth. On the average, preterm and low-birth-weight infants were at a 24% higher risk of death if birth occurred outside of a level 3 center, regardless of whether birth occurred at a level 1 or level 2 hospital. Preterm and low-birth-weight infants, though constituting only 12% of births, accounted for 70% of neonatal deaths in New York City. The remaining infants, ie, those born at term and of normal birth weight, who experienced no measurable mortality advantage when born in a level 3 hospital, accounted for 88% of all births.
Paneth N, Kiely JL, Wallenstein S, Susser M. The Choice of Place of Delivery: Effect of Hospital Level on Mortality in All Singleton Births in New York City. Am J Dis Child. 1987;141(1):60–64. doi:10.1001/archpedi.1987.04460010060024
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