The Stratified Cox Procedure

  • David G. Kleinbaum
Part of the Statistics in the Health Sciences book series (SBH)


We begin with an example of the use of the stratified Cox procedure for a single predictor that does not satisfy the PH assumption. We then describe the general approach for fitting a stratified Cox model, including the form of the (partial) likelihood function used to estimate model parameters.


Interaction Model Hazard Function Product Term Likelihood Ratio Test Statistic Baseline Hazard Function 
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Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • David G. Kleinbaum
    • 1
  1. 1.Department of EpidemiologyEmory UniversityAtlantaUSA

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