<span class="fu"><a href="fit.subgroup.html">fit.subgroup</a></span><span class="op">(</span>x <span class="op">=</span> <span class="va">x</span>, y <span class="op">=</span> <span class="va">y</span>,</span>
<span class="r-in">                           trt <span class="op">=</span> <span class="va">trt01</span>,</span>
<span class="r-in">                           propensity.func <span class="op">=</span> <span class="va">prop.func</span>,</span>
<span class="r-in">                           loss   <span