EVOLUTION-MANAGER
Edit File: coxph.wtest.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: Compute a quadratic form</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 coxph.wtest {survival}"><tr><td>coxph.wtest {survival}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Compute a quadratic form</h2> <h3>Description</h3> <p>This function is used internally by several survival routines. It computes a simple quadratic form, while properly dealing with missings. </p> <h3>Usage</h3> <pre> coxph.wtest(var, b, toler.chol = 1e-09) </pre> <h3>Arguments</h3> <table summary="R argblock"> <tr valign="top"><td><code>var</code></td> <td> <p>variance matrix</p> </td></tr> <tr valign="top"><td><code>b</code></td> <td> <p>vector</p> </td></tr> <tr valign="top"><td><code>toler.chol</code></td> <td> <p>tolerance for the internal cholesky decomposition</p> </td></tr> </table> <h3>Details</h3> <p>Compute b' V-inverse b. Equivalent to sum(b * solve(V,b)), except for the case of redundant covariates in the original model, which lead to NA values in V and b. </p> <h3>Value</h3> <p>a real number</p> <h3>Author(s)</h3> <p>Terry Therneau</p> <hr /><div style="text-align: center;">[Package <em>survival</em> version 2.44-1.1 <a href="00Index.html">Index</a>]</div> </body></html>