Covariate Balancing through Naturally Occurring Strata.

ABSTRACT:

Objective

To provide an alternative to propensity scoring (PS) for the common situation where there are interacting covariates.

Setting

We used 1.3 million assessments of residents of the United States Veterans Affairs nursing homes, collected from January 1, 2000, through October 9, 2012.

Design

In stratified covariate balancing (SCB), data are divided into naturally occurring strata, where each stratum is an observed combination of the covariates. Within each stratum, cases with, and controls without, the target event are counted; controls are weighted to be as frequent as cases. This weighting procedure guarantees that covariates, or combination of covariates, are balanced, meaning they occur at the same rate among cases and controls. Finally, impact of the target

SUBMITTER: Alemi F 

PROVIDER: S-EPMC5785330 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature