r.io/r/base/library.html" class="external-link">require</a></span><span class="op">(</span><span class="va"><a href="https://github.com/ProjectMOSAIC/mosaic" class="external-link">mosaic</a></span><span class="op">)</span><span class="op">)</span> <span class="op">{</span></span></span>
<span class="r-in"><span>  <span class="fu">df_stats</span><span class="op">(</span><span class="va">sex</span> <span class="op">~</span> <span class="va">substance</span>, data <span class="op">=</span> <span class="va">HEL