s="r-out co"><span class="r-pr">#&gt;</span>                                                                               </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  Number in model = 894, Number of groups = 5, AIC = 933.8, C-statistic = 0.815</span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># lm</span></span></span>
<span class="r-in"><span><span class="va">fit</span> <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/stats/lm.