MatchIt : Nonparametric Preprocessing for Parametric Causal Inference

Daniel E. Ho, Kosuke Imai, Gary King et al.

2011 · Journal of Statistical Software · 4,467 citations

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 infere…

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