Evaluation of competing risks prediction models using polytomous discrimination index.

ABSTRACT: For competing risks data, it is often important to predict a patient's outcome status at a clinically meaningful time point after incorporating the informative censoring due to competing risks. This can be done by adopting a regression model that relates the cumulative incidence probabilities to a set of covariates. To assess the performance of the resulting prediction tool, we propose an estimator of the polytomous discrimination index applicable to competing risks data, which can quantify a prognostic model's ability to discriminate among subjects from different outcome groups. The proposed estimator allows the prediction model to be subject to model misspecification and enjoys desirable asymptotic properties. We also develop an efficient computation algorithm that features a computation

SUBMITTER: Ding M 

PROVIDER: S-EPMC8547414 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature