[R] Making Gehan-Breslow test for Survival data

Cody Hamilton Cody_Hamilton at Edwards.com
Tue Jul 10 23:55:10 CEST 2007


The Gehan-Breslow test provides a generalization of the Kruskal-Wallis test for censored data.  As an alternative, try using survdiff with rho=1.  This method uses weights w(ti) = S(ti) (where S is the Kaplan-Meier estimate of survival) which yields Fleming and Harrington's version of the Kruskal-Wallis test for censored data.  This test will give more weight to early differences in the hazards.


Cody Hamilton
Edwards Lifesciences

Hi all,

The survivals functions can be tested by the Log-rank test and others, for
example the Gehan-Breslow. The graham breslow work with the alpha values.

But I don't know how is the Gehan-Breslow test with R. Somebody know a
type function?.. or other suggestions?  Any help will be really

José Bustos
Marine Biologist
Master Apllied Stat Program
University of Concepción

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