https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"status"</span>,<span class="st">"trt"</span>,<span class="st">"ascites"</span>,<span class="st">"hepato"</span>,<span class="st">"spiders"</span>,<span class="st">"edema"</span>,<span class="st">"stage"</span><span class="op">)</span></span>
<span class="r-in"><span class="va">pbc</span><span class="op">[</span><span class="va">varsToFactor</span><span class="op">]</span> <span class="op">&lt;-</span>