ion}
    P_R(t) = \frac{1}{1 + \exp(-(\beta_{0} + \beta_{1}t + \beta_{2}t^2 + \beta_{3}t^3))}
\end{equation}\]</span></p>
<p>respectively.</p>
<p>As a demonstration, we perform only 10 bootstrap iterations in the example below:</p>
<div class="sourceCode" id="cb10"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span class="va">mdri</span> <span class="op">&lt;-</span> <span class="fu"><a href="../reference/mdrical.html">mdrical</a></span><span class="op">(</span>data<span class="op">=</span>