Performance of propensity score methods in observational studies: a systematic review | Synapse
March 8, 2026Open Access
Performance of propensity score methods in observational studies: a systematic review
Key Points
The study aims to assess how well different propensity score methods perform in reducing bias in observational studies.
Conducted a systematic review of existing literature on propensity score methods.
Evaluated effectiveness based on bias reduction and covariate balance indicators.
Analyzed methods including PSM, DR-IPTW, and full matching.
PSM, DR-IPTW, and full matching showed significant effectiveness in reducing bias.
These methods achieved better covariate balance compared to traditional approaches.
Using these techniques enhanced precision and minimized mean squared error.
Abstract
PSM, DR-IPTW, and full matching are among the most effective methods for reducing bias, achieving covariate balance, minimizing MSE, and enhancing precision in observational studies.