 covariates. Multiple Partial F-tests can
be specified using the <code><a href="U.html">U</a></code> function.</p>
    </div>

    <div class="section level2">
    <h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">regress</span><span class="op">(</span></span>
<span>  <span class="va">fnctl</span>,</span>
<span>  <span class="va">formula</span>,</span>
<span>  <span class="va">data</spa