Wehby, George L.; Murray, Jeffrey C.; Castilla, Eduardo E. - In: Health Economics 18 (2009) 11, pp. 1307-1321
The effects of prenatal care utilization on birth weight (BW) may vary by unobserved fetal health endowments. This heterogeneity will be masked by estimating the effects at BW mean but can be evaluated by estimating the effects at BW quantiles as fetal health endowment is a strong correlate with...
