The interactive effects of mother's scholling and unsupplemented breastfeeding on child health
估计了母乳喂养时长与儿童身高年龄Z评分之间的非线性关系，发现纯母乳喂养的健康收益因母亲受教育程度而异，低教育母亲的孩子获益最大。
This paper estimates a non-linear relationship between duration of breastfeeding and child height-for-age. For this sample of children, health benefits from unsupplemented breastfeeding differ by mother's education, with children of less educated mothers deriving the most gains. These results suggest that more educated mothers are able to provide wholesome substitutes to breastmilk without producing ill effects. Results are sensitive to the estimation technique used, with 2SLS estimates showing statistical significance and substantial health gains compared to OLS estimates.