a></dt>
<dd><p>an object inheriting from class <code>hlme</code>, <code>lcmm</code>,
<code>Jointlcmm</code> or <code>multlcmm</code> representing a general latent class
mixed model.</p></dd>


<dt id="arg-newdata">newdata<a class="anchor" aria-label="anchor" href="#arg-newdata"></a></dt>
<dd><p>data frame containing the data from which predictions are to be computed.
The data frame should include at least all the covariates listed in model$Xnames2,
the marker(s) values and the grouping structure. Names shou