title: A semiparametric Bayesian proportional hazards model for interval censored data with frailty effects.
abstract: BACKGROUND
  Multivariate analysis of interval censored event data based on classical likelihood methods is notoriously cumbersome. Likelihood inference for models which additionally include random effects are not available at all. Developed algorithms bear problems for practical users like: matrix inversion, slow convergence, no assessment of statistical uncertainty.
  
  
  METHODS
  MCMC procedures combined with imputation are used to implement hierarchical models for interval censored data within a Bayesian framework.
  
  
  RESULTS
  Two examples from clinical practice demonstrate the handling of clustered interval censored event times as well as multilayer random effects for inter-institutional quality assessment. The software developed is called survBayes and is freely available at CRAN.
  
  
  CONCLUSIONS
  The proposed software supports the solution of complex analyses in many fields of clinical epidemiology as well as health services research.
authors.affiliation: Institute for Medical Informatics, Biometry and Epidemiology, and Tumour Registry Munich, University of Munich, Marchioninistr, 15, D-81377 Munich, Germany. vhenschel@gmx.de
authors.forename: Volkmar
authors.initials: V
authors.lastname: Henschel
authors.forename: Jutta
authors.initials: J
authors.lastname: Engel
authors.forename: Dieter
authors.initials: D
authors.lastname: Hölzel
authors.forename: Ulrich
authors.initials: U
authors.lastname: Mansmann
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000465:Algorithms; D001499:Bayes Theorem; D016000:Cluster Analysis; D015179:Colorectal Neoplasms / Q000628:therapy; D005858:Germany; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D017063:Outcome Assessment, Health Care / Q000379:methods / Q000706:statistics & numerical data; D011379:Prognosis; D016016:Proportional Hazards Models; D012042:Registries / Q000706:statistics & numerical data; D015203:Reproducibility of Results