tion of the total length of stay in states when there are time dependent covariates.</p>
<p>However, <code>ppass.msm</code> and <code>efpt.msm</code> are not currently supported with time dependent covariates.</p>
</div>
<div id="covariates-may-themselves-change-unpredictably" class="section level2" number="5.3">
<h2><span class="header-section-number">5.3</span> Covariates may themselves change unpredictably</h2>
<p>In the psoriatic arthritis example, suppose the risk factors <code>hieffusn</code> and <cod