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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.<\/jats:p>","DOI":"10.1017\/s0266466617000056","type":"journal-article","created":{"date-parts":[[2017,2,16]],"date-time":"2017-02-16T07:08:40Z","timestamp":1487228920000},"page":"112-133","update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":104,"title":["A GENERAL DOUBLE ROBUSTNESS RESULT FOR ESTIMATING AVERAGE TREATMENT EFFECTS"],"prefix":"10.1017","volume":"34","author":[{"given":"Tymon","family":"S\u0142oczy\u0144ski","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeffrey M.","family":"Wooldridge","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2017,2,16]]},"reference":[{"key":"S0266466617000056_ref55","doi-asserted-by":"crossref","first-page":"763","DOI":"10.1002\/jae.2386","article-title":"Doubly robust estimation of causal effects with multivalued treatments: An application to the returns to schooling","volume":"30","author":"Uysal","year":"2015","journal-title":"Journal of Applied Econometrics"},{"key":"S0266466617000056_ref45","doi-asserted-by":"crossref","first-page":"439","DOI":"10.1093\/biomet\/ass013","article-title":"Improved double-robust estimation in missing data and causal inference models","volume":"99","author":"Rotnitzky","year":"2012","journal-title":"Biometrika"},{"key":"S0266466617000056_ref50","doi-asserted-by":"crossref","first-page":"560","DOI":"10.1214\/07-STS227A","article-title":"Comment: Understanding OR, PS and DR","volume":"22","author":"Tan","year":"2007","journal-title":"Statistical Science"},{"key":"S0266466617000056_ref51","doi-asserted-by":"crossref","first-page":"661","DOI":"10.1093\/biomet\/asq035","article-title":"Bounded, efficient and doubly robust estimation with inverse weighting","volume":"97","author":"Tan","year":"2010","journal-title":"Biometrika"},{"key":"S0266466617000056_ref43","doi-asserted-by":"crossref","first-page":"544","DOI":"10.1214\/07-STS227D","article-title":"Comment: Performance of double-robust estimators when \u201cinverse probability\u201d weights are highly variable","volume":"22","author":"Robins","year":"2007","journal-title":"Statistical Science"},{"key":"S0266466617000056_ref26","doi-asserted-by":"crossref","first-page":"467","DOI":"10.2307\/2951620","article-title":"Identification and estimation of local average treatment effects","volume":"62","author":"Imbens","year":"1994","journal-title":"Econometrica"},{"key":"S0266466617000056_ref53","doi-asserted-by":"crossref","first-page":"569","DOI":"10.1214\/07-STS227B","article-title":"Comment: Demystifying double robustness: A comparison of alternative strategies for estimating a population mean from incomplete data","volume":"22","author":"Tsiatis","year":"2007","journal-title":"Statistical Science"},{"key":"S0266466617000056_ref54","unstructured":"Uysal, S.D . 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