Propensity score matching

Last revised by Rohit Sharma on 15 Jan 2023

Propensity score matching is a statistical technique used with observational data to elucidate the effects of a treatment or intervention by accounting for the covariates which accompany receiving the particular treatments or interventions studied. By accounting for covariates the technique often reduces the influence of confounding variables in analysis. This technique is particularly useful when a randomized control trial is unethical or unfeasible.

History and etymology

Propensity score matching has been in use since the 1980s when it was introduced by Paul Rosenbaum and Donald Rubin 1. The technique has been used in radiology research over the last decade and is increasingly used in clinical research in general 2.

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