Contrast-specific propensity scores

Shasha Han, Donald. B. Rubin
2021 figshare.com  
Basic propensity score methodology is designed to balance the distributions of multivariate pre-treatment covariates when comparing one active treatment with one control treatment. However, practical settings often involve comparing more than two treatments, where more complicated contrasts than the basic treatment-control one, (1,−1), are relevant. Here, we propose the use of contrast-specific propensity scores (CSPS), which allows the creation of treatment groups of units that are balanced
more » ... h respect to bifurcations of the specified contrasts and the multivariate space spanned by these bifurcations.
doi:10.6084/m9.figshare.14910334.v1 fatcat:pd4jugghfvbn3mrtmmoer5ri2m