Unobservables, Pregnancy Resolutions, and Birth Weight Production Functions in New York City
首次在婴儿健康生产函数中同时控制妊娠结局（活产或人工流产）和产前医疗服务使用的自选择偏差，并将孕妇的生育或流产决策纳入生育控制的经济模型，以改进对婴儿健康生产函数和产前医疗需求函数的估计。
This paper makes contributions to the estimation of health production functions and the economics of fertility control. The authors present the first infant health production functions that simultaneously control for self-selection in the resolution of pregnancies as live births or induced abortions and in the use of prenatal medical care services. The authors also incorporate the decision of a pregnant woman to give birth or to obtain an abortion into economic models of fertility control and use information conveyed by this decision to refine estimates of infant health production functions and demand functions for prenatal medical care. Copyright 1990 by University of Chicago Press.