class="op">=</span> <span class="fl">0</span>,  <span class="co">#Flag to determine if progression-accelerating event occurred</span></span>
<span>  pfs.time <span class="op">=</span> <span class="cn">NA</span>, <span class="co">#Recording of time at progression</span></span>
<span>  q_default <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/ifelse.html" class="external-link">ifelse</a></span><span class="op">(</span><span class="va">fl.prog</span> <span class="op">==</span> <span 