gehan.test: Gehan generalization the Wilcoxon two-sample test

In npsm: Nonparametric Statistical Methods

Gehan generalization the Wilcoxon two-sample test

Description

Generalization of the Wilcoxon rank sum which allows for censored data.

Usage

 gehan.test(time, event, trt) 

Arguments

time	Time of event or of censoring
event	Indicator variable representing a event occur or not (time is censored)
trt	Variable indicating treatment group.

Value

statistic	Value of the test statistic
p.value	p-value

Author(s)

John Kloke

References

Higgins (2004), Introduction to Modern Nonparametric Statistics, Pacific Grove, CA:Brooks/Cole–Thomson Learning

Examples

n<-76
y<-rexp(n)
event<-rbinom(n,1,0.7) # about 30%  censored
trt<-sample(c(0,1),n,replace=TRUE)
gehan.test(y,event,trt)

npsm documentation built on May 29, 2024, 3:07 a.m.