Journal article
Double-adjustment in propensity score matching analysis: choosing a threshold for considering residual imbalance
Abstract
BackgroundDouble-adjustment can be used to remove confounding if imbalance exists after propensity score (PS) matching. However, it is not always possible to include all covariates in adjustment. We aimed to find the optimal imbalance threshold for entering covariates into regression.MethodsWe conducted a series of Monte Carlo simulations on virtual populations of 5,000 subjects. We performed PS 1:1 nearest-neighbor matching on each sample. We …
Authors
Nguyen T-L; Collins GS; Spence J; Daurès J-P; Devereaux PJ; Landais P; Le Manach Y
Journal
BMC Medical Research Methodology, Vol. 17, No. 1,
Publisher
Springer Nature
Publication Date
December 2017
DOI
10.1186/s12874-017-0338-0
ISSN
1471-2288