Propensity Score Matching: A Conceptual Review for Radiology Researchers

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. P...

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Bibliographic Details
Published inKorean journal of radiology Vol. 16; no. 2; pp. 286 - 296
Main Authors Baek, Seunghee, Park, Seong Ho, Won, Eugene, Park, Yu Rang, Kim, Hwa Jung
Format Journal Article
LanguageEnglish
Published Korea (South) The Korean Society of Radiology 01.03.2015
대한영상의학회
Subjects
Accuracy
Bias
Clinical medicine
Clinical trials
Confounding (Statistics)
Diagnostic tests
Experimental and Others
Female
Humans
Liver
Male
Middle Aged
Observational studies
Patients
Propensity Score
Radiology - methods
Research Design
Research Personnel
Software
Statistical analysis
Variables
방사선과학
Matching
Indication bias
Observational study
Propensity score
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Summary: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.
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G704-001113.2015.16.2.018
ISSN:1229-6929
2005-8330
2005-8330
DOI:10.3348/kjr.2015.16.2.286