imization phase; default
            is <code>FALSE</code>.</p></dd>


</dl><p></p></dd>

<dt id="arg--">...<a class="anchor" aria-label="anchor" href="#arg--"></a></dt>
<dd><p>arguments passed to <code>control</code>.</p></dd>

</dl></div>
    <div id="details">
    <h2>Details</h2>
    <p><b>General:</b> The <code>mixed_model()</code> function fits mixed effects models in which the
integrals over the random effects in the definition of the marginal log-likelihood cannot
be solved analytically and need to 