Computationally Efficient Estimation for the Generalized Odds Rate Mixture Cure Model with Interval-Censored Data.

ABSTRACT: For semiparametric survival models with interval censored data and a cure fraction, it is often difficult to derive nonparametric maximum likelihood estimation due to the challenge in maximizing the complex likelihood function. In this paper, we propose a computationally efficient EM algorithm, facilitated by a gamma-poisson data augmentation, for maximum likelihood estimation in a class of generalized odds rate mixture cure (GORMC) models with interval censored data. The gamma-poisson data augmentation greatly simplifies the EM estimation and enhances the convergence speed of the EM algorithm. The empirical properties of the proposed method are examined through extensive simulation studies and compared with numerical maximum likelihood estimates. An R package "GORCure" is developed to imp

SUBMITTER: Zhou J 

PROVIDER: S-EPMC5978779 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature