gehan

Data from a clinical trial which compared  6-mercaptopurine (6-MP) to a placebo in
  the maintenance of remissions in acute leukemia. The remission times
  in weeks one year after the start of the study were
  recorded. Participants were paired according to remission status, an
  aspect not described in Gehan (1965).


survival

This package accompanies Aitkin et al, Statistical
Modelling in R, OUP, 2009. The package contains some functions
and datasets used in the text.

Ross Darnell

SMIR

Companion to Statistical Modelling in R

gehan function

A dataframe containing 42 obs. of 5 variables:
  <table><tr><td>
    [1,] </td>
<td> pair </td>
</tr><tr><td> numeric defining pair according to remission
    status</td>
<td>
    [2,] </td>
</tr><tr><td> time </td>
<td> numeric time to remission available at the time
    the trial was stoppped</td>
</tr><tr><td>
    [3,]</td>
<td> cens </td>
</tr><tr><td> numeric "0" indicating censored ,"1"
    uncensored</td>
<td>
    [4,]</td>
</tr><tr><td> treat </td>
<td> factor w/ 2 levels "6-MP", "control"</td>
</tr></table>

Format

Gehan, E. A. (1965), "A generalized Wilcoxon test for comparing
                  arbitrarily singly-censored samples",
		  <em>Biometrika</em>,
		  <b>52</b>, 203--233.

gehan: Remission times of acute leukemia patients --- Gehan et al

Description

Usage

Arguments

Format

Source

[1,]	pair
numeric defining pair according to remission status	[2,]
time	numeric time to remission available at the time the trial was stoppped
[3,]	cens
numeric "0" indicating censored ,"1" uncensored	[4,]
treat	factor w/ 2 levels "6-MP", "control"