Types of propensity score matching
Summarized from a nice review paper by Basu, Unuigbe and Masseria (2023). Stratifying by Quintiles of propensity scores (PS). Under this approach, the empirical distribution of the estimated PS across the entire sample (including treated and untreated participants) is divided into quintiles. Indicator variables for the first 4 quintiles are then used as covariates, along…