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Propensity score matching: a conceptual review for radiology researchers.


ABSTRACT: The propensity score is defined as the probability of each individual study subject being assigned to a group of interest for comparison purposes. Propensity score adjustment is a method of ensuring an even distribution of confounders between groups, thereby increasing between group comparability. Propensity score analysis is therefore an increasingly applied statistical method in observational studies. The purpose of this article was to provide a step-by-step nonmathematical conceptual guide to propensity score analysis with particular emphasis on propensity score matching. A software program code used for propensity score matching was also presented.

SUBMITTER: Baek S 

PROVIDER: S-EPMC4347264 | biostudies-literature | 2015 Mar-Apr

REPOSITORIES: biostudies-literature

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Propensity score matching: a conceptual review for radiology researchers.

Baek Seunghee S   Park Seong Ho SH   Won Eugene E   Park Yu Rang YR   Kim Hwa Jung HJ  

Korean journal of radiology 20150227 2


The propensity score is defined as the probability of each individual study subject being assigned to a group of interest for comparison purposes. Propensity score adjustment is a method of ensuring an even distribution of confounders between groups, thereby increasing between group comparability. Propensity score analysis is therefore an increasingly applied statistical method in observational studies. The purpose of this article was to provide a step-by-step nonmathematical conceptual guide to  ...[more]

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