标题： 估计平均治疗效应：补充分析和现存挑战 显示英文标题

标题： Estimating Average Treatment Effects: Supplementary Analyses and Remaining Challenges

摘要： 已有大量文献研究了在处理分配未混淆的固定协变量数量设置下，平均处理效应的半参数估计。最近，注意力转向了具有大量协变量的设置。本文我们将从早期文献中汲取经验，扩展到这一新领域。我们建议研究人员除了报告点估计和标准误差外，还应报告一系列补充分析的结果，以帮助评估其估计的可信度。 显示英文摘要

摘要： There is a large literature on semiparametric estimation of average treatment effects under unconfounded treatment assignment in settings with a fixed number of covariates. More recently attention has focused on settings with a large number of covariates. In this paper we extend lessons from the earlier literature to this new setting. We propose that in addition to reporting point estimates and standard errors, researchers report results from a number of supplementary analyses to assist in assessing the credibility of their estimates.