kmatch

kmatch: New command for multivariate-distance and propensity-score matching

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kmatch matches treated and untreated observations with respect to covariates and, if outcome variables are provided, estimates treatment effects based on the matched observations, optionally including regression adjustment bias-correction. Multivariate (Mahalanobis) distance matching as well as propensity score matching is supported, either using kernel matching, ridge matching, or nearest-neighbor matching. For kernel and ridge matching, several methods for data-driven bandwidth selection such as cross-validation are offered. The package also includes various commands for evaluating balancing and common-support violations. 公卫人
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安装：

公卫家园

. ssc install kmatch 

公卫百科
 

. ssc install kmatch, replace 公卫人