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Performance evaluation of propensity score methods for estimating average treatment effects with multi-level treatments

Performance evaluation of propensity score methods for estimating average treatment effects with multi-level treatments

The propensity score (PS) method is widely used to estimate the average treatment effect (TE) in observational studies. However, it is generally confined to the binary treatment assignment. In an extension to the settings of a multi-level treatment, Imbens proposed a generalized propensity score which is the conditional probability of …