://rdrr.io/r/base/match.html" class="external-link">%in%</a></span> <span class="va">om</span>,<span class="op">]</span></span></span>
<span class="r-in"><span><span class="op">}</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co">#relevel factors for model </span></span></span>
<span class="r-in"><span><span class="va">data</span><span class="op">$</span><span class="va">st29q03</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io