title: Index variable from a regression output
body: <p>After I obtain outputs from a regression, is there any way that I can index certain variable in this regression model?</p>
  
  <p>E.g. regression</p>
  
  <pre><code> myModel &lt;- lm(y ~ a*b+c)
   myModelSumm &lt;- summary(myModel)
   varNeeded &lt;- myModelSumm$...
   print(varNeeded) = c
  </code></pre>
  
  <p>How can I index variable c in the outputs?</p>