Semiparametric Bayesian analysis of high-dimensional censored outcome data

Chetkar Jha, Yi Li and Subharup Guha

Statistical Theory and Related Fields, 2017, vol. 1, issue 2, 194-204

Abstract: The Surveillance, Epidemiology and End Results (SEER) cancer database contains survival data for US individuals diagnosed with cancer. Semiparametric Bayesian methods are computationally expensive to fit for such large data-sets. This paper develops a cost-effective Markov chain Monte Carlo strategy for censored outcomes to fit a semiparametric bayesian analysis of SEER data of New Mexico. We use an accelerated failure time model, with Dirichlet process random effects for inter-subject variation, and intrinsic conditionally autoregressive random effects for spatial correlations. The results offer insights into differences in breast cancer mortality rates between ethnic groups, tumor grade and spatial effect of counties.

Date: 2017
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DOI: 10.1080/24754269.2017.1396436

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