va">mri</span><span class="op">$</span><span class="va">sex</span><span class="op">)</span></span></code></pre></div>
<pre><code><span><span class="co">## </span></span>
<span><span class="co">## Call:</span></span>
<span><span class="co">## proptest(var1 = mri$ldl &gt; 128, by = mri$sex)</span></span>
<span><span class="co">## </span></span>
<span><span class="co">## Two-sample proportion test (approximate) :</span></span>
<span><span class="co">##  </span></span>
<span><span class="co">##               Gr