Title

A Comparison Of Propensity Score Matching Methods For Reducing Selection Bias

Keywords

Caliper matching; Mahalanobis metric matching; Nearest neighbour matching; Propensity score analysis; Propensity score matching; Selection bias; Stratification

Abstract

Propensity score matching (PSM) has become a popular approach for research studies when randomization is infeasible. However, there are significant differences in the effectiveness of selection bias reduction among the existing PSM methods and, therefore, it is challenging for researchers to select an appropriate matching method. This current study compares four commonly used PSM methods for reducing selection bias on observational data from which the treatment effects are intended to be assessed. The selection bias, standardized bias and percent bias reduction are evaluated for each of the PSM methods using empirical data drawn from the national Education Longitudinal Study of 2002. The results of the current study provide empirical evidence and helpful information for researchers to select effective PSM methods for their research studies. © 2011 Taylor & Francis.

Publication Date

4-1-2011

Publication Title

International Journal of Research and Method in Education

Volume

34

Issue

1

Number of Pages

81-107

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1080/1743727X.2011.552338

Socpus ID

79956353203 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/79956353203

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