 specify the data frame used to fit the model containing observations with <code>NA</code> values.</p></li>
</ul>
<div id="general-usage" class="section level3">
<h3 class="hasAnchor">
<a href="#general-usage" class="anchor"></a>General usage</h3>
<p>To extract unstandardized level-1 residuals and marginal residuals, we use the following call.</p>
<div class="sourceCode" id="cb3"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span class="kw"><a href="https://rdrr.io/r/base/library.html">libr