ode>fortify</code> may be deprecated in the future.”
    The <code>broom.mixed</code> package is recommended for mixed models
    in general.</p></li>
<li><p><code>getData</code> is a bare-bones implementation; it relies on
    a <code>data</code> argument having been specified and the data being
    available in the environment of the formula. Unlike the functions
    in the <code>nlme</code> package, it does not do anything special with
    <code>na.action</code> or <code>subset</code>.</p></li>
</ul></