pan class="op">+</span> <span class="va">hyp</span> <span class="op">+</span> <span class="va">chl</span><span class="op">)</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">mi0</span> <span class="op">&lt;-</span> <span class="fu"><a href="with.mids.html">with</a></span><span class="op">(</span>data <span class="op">=</span> <span class="va">imp</span>, expr <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/stats/lm.html" class="external-link">lm</a