span>
<span class="r-in"><span><span class="fu">regress</span><span class="op">(</span><span class="st">"mean"</span>, <span class="va">atrophy</span> <span class="op">~</span> <span class="va">height</span> <span class="op">+</span> <span class="va">sex</span> <span class="op">+</span> <span class="fu"><a href="U.html">U</a></span><span class="op">(</span>hs<span class="op">=</span><span class="op">~</span><span class="va">height</span><span class="op">:</span><span class="va">sex</span><span class="op">)<