29.11 Matching for multi-level treatments

See (Yang et al. 2016)

Package in R shuyang1987/multilevelMatching on Github

References

Yang, Shu, Guido W Imbens, Zhanglin Cui, Douglas E Faries, and Zbigniew Kadziola. 2016. “Propensity Score Matching and Subclassification in Observational Studies with Multi-Level Treatments.” Biometrics 72 (4): 1055–65.