Efficient propensity score regression estimators of multi-valued treatment effects for the treated

We study the role of the propensity scores in estimating treatment effects for the treated with a multi-valued treatment. Assume assignment to one of the multiple treatments is random given observed characteristics. Valid causal comparisons for the subpopulation who has been treated a particular t...

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Bibliographic Details
Main Author: Lee, Y
Format: Working paper
Published: University of Oxford 2015