<span class="r-out co"><span class="r-pr">#&gt;</span>                                            as.factor(treatment)1  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                                                        2.253e-01  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                                            as.factor(treatment)2  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                                                        3.356e-01  <