span class="st">"stage"</span><span class="op">)</span>, cramVars <span class="op">=</span> <span class="st">"hepato"</span>, smd <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                          Stratified by trt</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                           1                         2                        </span>
<span class="r-out co"><span class="r-pr">#&gt;</s