n class="op">(</span><span class="va">Tstart</span>,<span class="va">Tstop</span>,<span class="va">status</span><span class="op">)</span><span class="op">~</span><span class="va">score</span><span class="op">+</span><span class="fu">strata</span><span class="op">(</span><span class="va">trans</span><span class="op">)</span>,</span></span>
<span class="r-in"><span>          data<span class="op">=</span><span class="va">data</span>,method<span class="op">=</span><span class="st">"breslow"</span><span class="o