%0 Report %A Sloczynski, Tymon %A Wooldridge, Jeffrey M. %T A General Double Robustness Result for Estimating Average Treatment Effects %D 2014 %8 2014 Mar %I Institute of Labor Economics (IZA) %C Bonn %7 IZA Discussion Paper %N 8084 %U https://www.iza.org/index.php/publications/dp8084 %X In this paper we study doubly robust estimators of various average treatment effects under unconfoundedness. We unify and extend much of the recent literature by providing a very general identification result which covers binary and multi-valued treatments; unnormalized and normalized weighting; and both inverse-probability weighted (IPW) and doubly robust estimators. We also allow for subpopulation-specific average treatment effects where subpopulations can be based on covariate values in an arbitrary way. Similar to Wooldridge (2007), we then discuss estimation of the conditional mean using quasi-log likelihoods (QLL) from the linear exponential family. %K double robustness %K inverse-probability weighting (IPW) %K multi-valued treatments %K quasi-maximum likelihood estimation (QMLE) %K treatment effects