Propensity score matching
STATISTICAL MATCHING TECHNIQUE TO ESTIMATE AN INTERVENTION’S EFFECT BY ACCOUNTING FOR THE COVARIATES THAT PREDICT RECEIVING THE TREATMENT, REDUCING THE BIAS DUE TO CONFOUNDING VARIABLES
Propensity score; Propensity Score Matching; Propensity-score matching; Propensity scoring; Propensity score methods
In the statistical analysis of observational data, propensity score matching (PSM) is a statistical matching technique that attempts to estimate the effect of a treatment, policy, or other intervention by accounting for the covariates that predict receiving the treatment. PSM attempts to reduce the bias due to confounding variables that could be found in an estimate of the treatment effect obtained from simply comparing outcomes among units that received the treatment versus those that did not.