Recent trends in neonatal mortality in South Carolina.

This study examines some of the primary factors responsible for the decline in South Carolina's neonatal mortality rate during the 1980s. Essentially all of the observed decline between 1980-82 and 1984-86 could be attributed to improved birthweight-specific survival rather than improvements in the infant birthweight distribution. Improved survival of 500-1,499 g infants accounted for 64% of the decline in white neonatal mortality and 70% of the decline among blacks. Also, during this period, the percentage of 500-1,499 g infants delivered at Level III hospitals increased significantly for both race groups. Comparisons with other southeastern states suggest that further reductions in South Carolina's neonatal mortality rate are possible through continued efforts aimed at improving birthweight-specific survival. Existing state-supported programs such as regional perinatal referral networks and the High Risk Channeling Project will continue to play an important role in maintaining the decline in the state's neonatal mortality rate.