Matching with {MatchIt} Many observational studies that are published try to balance the demographic and clinical characteristics that may be associated with the primary exposure of interest (e.g., drug or intervention) and the outcome of interest (e.g., time to relapse). Of the matching approaches, I’m going to cover the code for propensity score matching (PSM) and direct matching.
I’ve had many projects where PSM was done in order to balance the potential confounding characteristics between two cohorts.