Rates have decreased in the last 2 decades.
Reductions associated with advances in the management of infants delivered preterm.
Mortality rate among infants with a birth weight of between 501 and 750 gm less than 50% in 1997-2002 in the U.S.
At term most intrapartum and neonatal deaths associated with intrapartum anoxia, after excluding intrapartum stillbirths and deaths due to fetal abnormalities.