MatchIt: Nonparametric Preprocessing for Parametric Causal Inference

Selects matched samples of the original treated and control groups with similar covariate distributions – can be used to match exactly on covariates, to match on propensity scores, or perform a variety of other matching procedures. The package also implements a series of recommendations offered in Ho, Imai, King, and Stuart (2007) doi:10.1093/pan/mpl013 . (The 'gurobi' package, which is not on CRAN, is optional and comes with an installation of the Gurobi Optimizer, available at https://www.gurobi.com.)

See also

Useful links:

• https://kosukeimai.github.io/MatchIt/

• https://github.com/kosukeimai/MatchIt

• Report bugs at https://github.com/kosukeimai/MatchIt/issues

Author

Maintainer: Noah Greifer noah.greifer@gmail.com (ORCID)

Authors:

• Daniel Ho daniel.e.ho@gmail.com (ORCID)

• Kosuke Imai imai@harvard.edu (ORCID)

• Gary King king@harvard.edu (ORCID)

• Elizabeth Stuart estuart@jhu.edu (ORCID)

Other contributors:

• Alex Whitworth whitworth.alex@gmail.com [contributor]