del <code>cav.imp.binary.msm</code> with time period as a binary effect on selected transitions has a slightly improved AIC over the alternative models.</p></li>
</ol>
<p>Note that it might be possible to find even better fitting models than these - but with intermittently-observed data, it is difficult to produce exploratory plots that would indicate what the shape of the dependence on time might be, or what cut-points for time periods might be appropriate.</p>

</div>
</div>
            </section>

      