Propensity Scoring

Keywords

Covariate adjustment; Optimal matching; Propensity score adjustments; Propensity score matching; Propensity scores; Quasi-experiments; Selection bias; Standardized bias estimate; Stratifying; Weighting

Abstract

A propensity score is the conditional probability that a participant will be assigned to a treatment condition given a set of observed covariates. These scores are used as a single, aggregated covariate to make statistical adjustments through matching, weighting, stratifying or covariate adjustments to reduce selection bias in nonrandomized designs. Assuming that propensity scores are computed from all relevant covariates, propensity score adjustments should balance the treatment and control groups in an experiment and provide an unbiased estimate of the treatment effect.

Publication Date

3-26-2015

Publication Title

International Encyclopedia of the Social & Behavioral Sciences: Second Edition

Number of Pages

140-146

Document Type

Article; Book Chapter

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/B978-0-08-097086-8.10557-4

Socpus ID

85043435627 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85043435627

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