Estimating Average Treatment Effects with Continuous and Discrete Covariates: The Case of Swan-Ganz Catheterization
提出一种同时处理连续和离散协变量的非参数方法，用于估计平均处理效应，并以Swan-Ganz导管术的疗效为例进行实证分析。
Estimating Average Treatment Effects with Continuous and Discrete Covariates: The Case of Swan-Ganz Catheterization by Qi Li, Jeffrey S. Racine and Jeffrey M. Wooldridge. Published in volume 98, issue 2, pages 357-62 of American Economic Review, May 2008