pan class="st">"full"</span><span class="op">)</span>, attr <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span>, <span class="st">"df.K"</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 8</span>
<span class="r-in"><span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># K.fixef = TRUE &amp; K.exact = TRUE</span></span></span>
<span class="r-in"><span><span class="co">#  =&gt; a