EVOLUTION-MANAGER
Edit File: nwtco.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: Data from the National Wilm's Tumor Study</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 nwtco {survival}"><tr><td>nwtco {survival}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Data from the National Wilm's Tumor Study</h2> <h3>Description</h3> <p>Measurement error example. Tumor histology predicts survival, but prediction is stronger with central lab histology than with the local institution determination. </p> <h3>Usage</h3> <pre>nwtco</pre> <h3>Format</h3> <p>A data frame with 4028 observations on the following 9 variables. </p> <dl> <dt><code>seqno</code></dt><dd><p>id number</p> </dd> <dt><code>instit</code></dt><dd><p>Histology from local institution</p> </dd> <dt><code>histol</code></dt><dd><p>Histology from central lab</p> </dd> <dt><code>stage</code></dt><dd><p>Disease stage</p> </dd> <dt><code>study</code></dt><dd><p>study</p> </dd> <dt><code>rel</code></dt><dd><p>indicator for relapse</p> </dd> <dt><code>edrel</code></dt><dd><p>time to relapse</p> </dd> <dt><code>age</code></dt><dd><p>age in months</p> </dd> <dt><code>in.subcohort</code></dt><dd><p>Included in the subcohort for the example in the paper</p> </dd> </dl> <h3>References</h3> <p>NE Breslow and N Chatterjee (1999), Design and analysis of two-phase studies with binary outcome applied to Wilms tumour prognosis. <em>Applied Statistics</em> <b>48</b>, 457–68. </p> <h3>Examples</h3> <pre> with(nwtco, table(instit,histol)) anova(coxph(Surv(edrel,rel)~histol+instit,data=nwtco)) anova(coxph(Surv(edrel,rel)~instit+histol,data=nwtco)) </pre> <hr /><div style="text-align: center;">[Package <em>survival</em> version 2.44-1.1 <a href="00Index.html">Index</a>]</div> </body></html>