Judkins David R, Morganstein David, Zador Paul, Piesse Andrea, Barrett Brandon, Mukhopadhyay Pushpal
Westat, 1650 Research Boulevard, Rockville, MD 20850, USA.
Stat Med. 2007 Feb 28;26(5):1022-33. doi: 10.1002/sim.2591.
This paper discusses some practical issues in applying propensity scoring in the context of endpoint analysis in a pre-/posttest longitudinal design with an ordinal measure of treatment intensity and a high-dimensional potential covariate space: how many covariates to include in propensity models; how to evaluate the adequacy of tentative propensity models; and how to tailor models to provide hypercontrol on a limited subset of covariates. These issues arose in the evaluation of a health communication program.
倾向模型中应纳入多少协变量；如何评估暂定倾向模型的充分性；以及如何定制模型以对有限的协变量子集提供超控制。这些问题出现在一项健康传播项目的评估中。
