Propensity Score Matching: A Conceptual Review for Radiology Researchers.
10.3348/kjr.2015.16.2.286
- Author:
Seunghee BAEK
1
;
Seong Ho PARK
;
Eugene WON
;
Yu Rang PARK
;
Hwa Jung KIM
Author Information
1. Department of Clinical Epidemiology and Biostatistics, Asan Medical Center, Seoul 138-736, Korea. hello.hello.hj@gmail.com
- Publication Type:Review
- Keywords:
Propensity score;
Matching;
Observational study;
Indication bias
- MeSH:
Female;
Humans;
Male;
Middle Aged;
*Propensity Score;
Radiology/*methods;
Research Design;
Research Personnel;
Software
- From:Korean Journal of Radiology
2015;16(2):286-296
- CountryRepublic of Korea
- Language:English
-
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.
