rguments"></a></h2>


<dl><dt id="arg-fit-">fit1<a class="anchor" aria-label="anchor" href="#arg-fit-"></a></dt>
<dd><p>An object of class <code>mira</code>, produced by <code><a href="with.mids.html">with()</a></code>.</p></dd>


<dt id="arg-fit-">fit0<a class="anchor" aria-label="anchor" href="#arg-fit-"></a></dt>
<dd><p>An object of class <code>mira</code>, produced by <code><a href="with.mids.html">with()</a></code>. The
model in <code>fit0</code> is a nested within <code>fit1</code>. The default null
m