dyNA</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="co">## the special case of refitting with a single simulation works ...</span></span></span>
<span class="r-in"><span><span class="va">ss0</span> <span class="op">&lt;-</span> <span class="fu">refit</span><span class="op">(</span><span class="va">fm0</span>, <span class="fu"><a href="https://rdrr.io/r/stats/simulate.html" class="external-link">simulate</a></span><span class="op">(</span><span class="va">fm0</span><span 