MatchIt: Nonparametric Preprocessing for Parametric Causal Inference

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Authors Daniel E. Ho, Kosuke Imai, Gary King, Elizabeth A. Stuart
Journal/Conference Name Journal of Statistical Software
Paper Category
Paper Abstract MatchIt implements the suggestions of Ho, Imai, King, and Stuart (2007) for improving parametric statistical models by preprocessing data with nonparametric matching methods. MatchIt implements a wide range of sophisticated matching methods, making it possible to greatly reduce the dependence of causal inferences on hard-to-justify, but commonly made, statistical modeling assumptions. The software also easily fits into existing research practices since, after preprocessing data with MatchIt, researchers can use whatever parametric model they would have used without MatchIt, but produce inferences with substantially more robustness and less sensitivity to modeling assumptions. MatchIt is an R program, and also works seamlessly with Zelig.
Date of publication 2011
Code Programming Language R
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