title: is there a way to only include factors that are significant at P<0.05 in a backward elimination in logistic regression
body: <p>When doing a backward elimination using the <code>step()</code>, is it possible to only include those factors that are significant, for example, at P&lt;0.05?</p>
  
  <p>I am using this line at the moment </p>
  
  <pre><code>step(FulMod3,direction="backward",trace=FALSE)
  </code></pre>
  
  <p>to get my final model.</p>