an class="r-out co"><span class="r-pr">#&gt;</span> "ast", "trig", "platelet", "protime", "stage")</span>
<span class="r-in"><span class="va">vars</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"time"</span>,<span class="st">"status"</span>,<span class="st">"age"</span>,<span class="st">"sex"</span>,<span class="st">"ascites"</span>,<span class="st">"hepato"</span>,</span>
<span class="