Changes in infant mortality among extremely preterm infants: US vital statistics data 1990 vs 2000 vs 2010

摘要

OBJECTIVE: Infant mortality among extremely preterm infants (22 to 28 weeks gestation) varies considerably by gestational age. The reduction in mortality over a 20-year period, when examined in gestational age week increments, may give a more precise estimate of progress or lack thereof in caring for these infants and provide information to better inform practitioners and parents of the risk of mortality among these small infants. The objective of this analysis is to examine infant mortality (birth to 365 days) by week of gestation for infants 22 to 28 weeks gestation comparing mortality rates, adjusting for maternal and infant birth characteristics, among US births for the years 1990, 2000 and 2010.