 on age</span></span></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">age</span>, data <span class="op">=</span> <span class="va">mri</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Call:</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>