n"><span></span></span>
<span class="r-in"><span><span class="co"># Default: K.fixef = "nonnested"</span></span></span>
<span class="r-in"><span><span class="co">#  =&gt; adjustment K = 1 + 5 (i.e. x + fe2)</span></span></span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/base/summary.html" class="external-link">summary</a></span><span class="op">(</span><span class="va">est</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> OLS estim