A joint model of recurrent events and a terminal event with a nonparametric covariate function

Yu Zhangsheng, Lei Liu

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

We extend the shared frailty model of recurrent events and a dependent terminal event to allow for a nonparametric covariate function. We include a Gaussian random effect (frailty) in the intensity functions of both the recurrent and terminal events to capture correlation between the two processes. We employ the penalized cubic spline method to describe the nonparametric covariate function in the recurrent events model. We use Laplace approximation to evaluate the marginal penalized partial likelihood without a closed form. We also propose the variance estimates for regression coefficients. Numerical analysis results show that the proposed estimates perform well for both the nonparametric and parametric components. We apply this method to analyze the hospitalization rate of patients with heart failure in the presence of death.

Original languageEnglish (US)
Pages (from-to)2683-2695
Number of pages13
JournalStatistics in Medicine
Volume30
Issue number22
DOIs
StatePublished - Sep 30 2011

Keywords

  • Counting process
  • Informative censoring
  • Proportional hazards model
  • Smoothing parameter
  • Survival analysis

ASJC Scopus subject areas

  • Epidemiology
  • Statistics and Probability

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