Concern about high infant mortality and morbidity in the United States
, combined with the erosion of private insurance coverage, sparked maj
or expansions in the Medicaid program in the 1980s. This study examine
s how the Medicaid expansions for pregnant women affected access to pr
enatal care for low-income women through case studies conducted in fou
r states early in 1991. Despite the significantly greater share of bir
ths covered by Medicaid in the period 1986 to 1991, the timely initiat
ion of prenatal care improved in only one state. Although prenatal ser
vices increased in some areas, significant problems persisted in other
s. The growth in capacity of the prenatal care system was greatest whe
n state and local policies designed to increase supply were also insti
tuted. While the Medicaid expansions eliminated significant barriers t
o prenatal care for low-income women, other policies that have been de
signed to reduce the remaining barriers may be necessary in order sign
ificantly to expand access to prenatal care and to improve birth outco
mes.