span class="r-pr">#&gt;</span> protime   1.103  1.62</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> ------------------------------------------------------------ </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> trt: 2</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>            n miss p.miss   mean     sd median     p25    p75   min     max</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> time     154    0   0.00 1996.9 1155.9 1811.0 1153.00 2771.2  51.0 