EVOLUTION-MANAGER
Edit File: gehan.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>R: Remission Times of Leukaemia Patients</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <link rel="stylesheet" type="text/css" href="R.css" /> </head><body> <table width="100%" summary="page for gehan {MASS}"><tr><td>gehan {MASS}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2> Remission Times of Leukaemia Patients </h2> <h3>Description</h3> <p>A data frame from a trial of 42 leukaemia patients. Some were treated with the drug <em>6-mercaptopurine</em> and the rest are controls. The trial was designed as matched pairs, both withdrawn from the trial when either came out of remission. </p> <h3>Usage</h3> <pre> gehan </pre> <h3>Format</h3> <p>This data frame contains the following columns: </p> <dl> <dt><code>pair</code></dt><dd> <p>label for pair. </p> </dd> <dt><code>time</code></dt><dd> <p>remission time in weeks. </p> </dd> <dt><code>cens</code></dt><dd> <p>censoring, 0/1. </p> </dd> <dt><code>treat</code></dt><dd> <p>treatment, control or 6-MP. </p> </dd> </dl> <h3>Source</h3> <p>Cox, D. R. and Oakes, D. (1984) <em>Analysis of Survival Data.</em> Chapman & Hall, p. 7. Taken from </p> <p>Gehan, E.A. (1965) A generalized Wilcoxon test for comparing arbitrarily single-censored samples. <em>Biometrika</em> <b>52</b>, 203–233. </p> <h3>References</h3> <p>Venables, W. N. and Ripley, B. D. (2002) <em>Modern Applied Statistics with S.</em> Fourth edition. Springer. </p> <h3>Examples</h3> <pre> library(survival) gehan.surv <- survfit(Surv(time, cens) ~ treat, data = gehan, conf.type = "log-log") summary(gehan.surv) survreg(Surv(time, cens) ~ factor(pair) + treat, gehan, dist = "exponential") summary(survreg(Surv(time, cens) ~ treat, gehan, dist = "exponential")) summary(survreg(Surv(time, cens) ~ treat, gehan)) gehan.cox <- coxph(Surv(time, cens) ~ treat, gehan) summary(gehan.cox) </pre> <hr /><div style="text-align: center;">[Package <em>MASS</em> version 7.3-51.4 <a href="00Index.html">Index</a>]</div> </body></html>