Objectives — Although the association between antenatal cocaine use and adverse birth outcomes has been well documented, relatively little is known about interventions that may ameliorate these consequences. We therefore examined the relationship between prenatal care and birth weight among a...

We use a pooled time-series cross-section of live births in New York City between 1980 and 1989 to investigate the dramatic rise in low birthweight, especially among Blacks, that occurred in the mid 1980s. After controlling for other risk factors, we estimate that the number of excess low...