oth cases, MDRI is the integral of <span class="math inline">\(P_R(t)\)</span> from <span class="math inline">\(0\)</span> to <span class="math inline">\(T\)</span>.</p>
<p><span class="math display">\[\begin{equation}
\Omega_T = \int_{0}^{T} P_R(t)dt
\end{equation}\]</span></p>
<p>The default behaviour is to implement both model forms if the argument <code>functional_forms</code> is omitted.</p>
<p>Confidence intervals are computed by means of subject-level bootstrapping, as measurements from subjects with