span class='fl'>TRUE</span>)
<span class='no'>surve_cph</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='explain.html'>explain</a></span>(<span class='kw'>model</span> <span class='kw'>=</span> <span class='no'>cph_model</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>pbcTest</span>[,-<span class='fu'>c</span>(<span class='fl'>1</span>,<span class='fl'>5</span>)],
                    <span class='kw'>y</span> <span class='kw'>=</span> <span class='fu'>Surv</span