CMatch                  Within and preferential-within cluster
                        matching.
CMatchBalance           Analyze covariate balance before and after
                        matching.
CMatching-package       Matching Algorithms for Causal Inference with
                        Clustered Data
MatchPW                 Preferential Within-cluster Matching
MatchW                  Within-cluster Matching
schools                 Schools data set (NELS-88)
summary.CMatch          Summarizing output from MatchW and MatchPW
                        functions
