The impact of prenatal care on birthweight: the case of Uruguay
研究乌拉圭城市贫困女性产前护理使用对出生体重的正面影响，发现OLS估计存在偏误，并验证了现有方法在非美国数据中的适用性。
This study analyzes prenatal care and birthweight in Uruguay. These data are unique since they represent a population of urban, poor women who gave birth in a health care system that provides both prenatal and obstetric care free of charge. This study finds a positive effect of increased prenatal care use on birthweight and evidence of bias in OLS estimates, similar to studies that use US data. The results highlight the usefulness of existing methodologies for estimating the effect of prenatal care on birthweight and the importance of extending these methodologies to data from countries other than the US.