vecmatch - Generalized Propensity Score Estimation and Matching for
Multiple Groups
Implements the Vector Matching algorithm to match multiple
treatment groups based on previously estimated generalized
propensity scores. The package includes tools for visualizing
initial confounder imbalances, estimating treatment assignment
probabilities using various methods, defining the common
support region, performing matching across multiple groups, and
evaluating matching quality. For more details, see Lopez and
Gutman (2017) <doi:10.1214/17-STS612>.