Estimating propensity scores and causal survival functions using prevalent survival data.

ABSTRACT: This article develops semiparametric approaches for estimation of propensity scores and causal survival functions from prevalent survival data. The analytical problem arises when the prevalent sampling is adopted for collecting failure times and, as a result, the covariates are incompletely observed due to their association with failure time. The proposed procedure for estimating propensity scores shares interesting features similar to the likelihood formulation in case-control study, but in our case it requires additional consideration in the intercept term. The result shows that the corrected propensity scores in logistic regression setting can be obtained through standard estimation procedure with specific adjustments on the intercept term. For causal estimation, two different types of

SUBMITTER: Cheng YJ 

PROVIDER: S-EPMC3508756 | biostudies-literature | 2012 Sep

REPOSITORIES: biostudies-literature