Optimal Multilevel Matching using a Network Algorithm

Performs multilevel matches for data with cluster- level treatments and individual-level outcomes using a network optimization algorithm. Functions for checking balance at the cluster and individual levels are also provided, as are methods for permutation-inference-based outcome analysis. Details in Pimentel et al. (2018) . The optmatch package, which is useful for running many of the provided functions, may be downloaded from Github at < https://github.com/markmfredrickson/optmatch> if not available on CRAN.