s="st">"Weibull"</span><span class="op">)</span> <span class="co">#Fit Weibull model to the OS data</span></span>
<span><span class="va">OS.fit</span></span>
<span><span class="co">#&gt; Call:</span></span>
<span><span class="co">#&gt; flexsurvreg(formula = Surv(AVAL_OS/365.25, Event_OS) ~ ARMCD, </span></span>
<span><span class="co">#&gt;     data = IPD, dist = "Weibull")</span></span>
<span><span class="co">#&gt; </span></span>
<span><span class="co">#&gt; Estimates: </span></span>
<span><span class="co">