EVOLUTION-MANAGER
Edit File: breslow.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: Smoking Deaths Among Doctors</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 breslow {boot}"><tr><td>breslow {boot}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2> Smoking Deaths Among Doctors </h2> <h3>Description</h3> <p>The <code>breslow</code> data frame has 10 rows and 5 columns. </p> <p>In 1961 Doll and Hill sent out a questionnaire to all men on the British Medical Register enquiring about their smoking habits. Almost 70% of such men replied. Death certificates were obtained for medical practitioners and causes of death were assigned on the basis of these certificates. The <code>breslow</code> data set contains the person-years of observations and deaths from coronary artery disease accumulated during the first ten years of the study. </p> <h3>Usage</h3> <pre> breslow </pre> <h3>Format</h3> <p>This data frame contains the following columns: </p> <dl> <dt><code>age</code></dt><dd> <p>The mid-point of the 10 year age-group for the doctors. </p> </dd> <dt><code>smoke</code></dt><dd> <p>An indicator of whether the doctors smoked (1) or not (0). </p> </dd> <dt><code>n</code></dt><dd> <p>The number of person-years in the category. </p> </dd> <dt><code>y</code></dt><dd> <p>The number of deaths attributed to coronary artery disease. </p> </dd> <dt><code>ns</code></dt><dd> <p>The number of smoker years in the category (<code>smoke*n</code>). </p> </dd></dl> <h3>Source</h3> <p>The data were obtained from </p> <p>Breslow, N.E. (1985) Cohort Analysis in Epidemiology. In <em>A Celebration of Statistics</em> A.C. Atkinson and S.E. Fienberg (editors), 109–143. Springer-Verlag. </p> <h3>References</h3> <p>Davison, A.C. and Hinkley, D.V. (1997) <em>Bootstrap Methods and Their Application</em>. Cambridge University Press. </p> <p>Doll, R. and Hill, A.B. (1966) Mortality of British doctors in relation to smoking: Observations on coronary thrombosis. <em>National Cancer Institute Monograph</em>, <b>19</b>, 205-268. </p> <hr /><div style="text-align: center;">[Package <em>boot</em> version 1.3-22 <a href="00Index.html">Index</a>]</div> </body></html>