Nonparametric survival analysis using Bayesian Additive Regression Trees (BART).

ABSTRACT: Bayesian additive regression trees (BART) provide a framework for flexible nonparametric modeling of relationships of covariates to outcomes. Recently, BART models have been shown to provide excellent predictive performance, for both continuous and binary outcomes, and exceeding that of its competitors. Software is also readily available for such outcomes. In this article, we introduce modeling that extends the usefulness of BART in medical applications by addressing needs arising in survival analysis. Simulation studies of one-sample and two-sample scenarios, in comparison with long-standing traditional methods, establish face validity of the new approach. We then demonstrate the model's ability to accommodate data from complex regression models with a simulation study of a nonproportiona

SUBMITTER: Sparapani RA 

PROVIDER: S-EPMC4899272 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature