n class="r-pr">#&gt;</span> ==&gt; Building Cox model...</span>
<span class="r-msg co"><span class="r-pr">#&gt;</span> ==&gt; Done.</span>
<span class="r-plt img"><img src="show_forest-2.png" alt="" width="700" height="433"></span>
<span class="r-in"><span><span class="fu">show_forest</span><span class="op">(</span><span class="va">lung</span>,</span></span>
<span class="r-in"><span>  covariates <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></s