Olmos A, Govindasamy P. Propensity Scores: A Practical Introduction Using R. J Multidiscip Eval [Internet]. 2015 Oct. 12 [cited 2025 Feb. 12];11(25):68-8. Available from: https://jmde.journals.publicknowledgeproject.org/index.php/jmde_1/article/view/431