>=</span> <span class="fl">6</span><span class="op">)</span></span>
<span></span>
<span><span class="co"># Perform preliminary power analysis (with progress bar)</span></span>
<span><span class="fu"><a href="https://progressr.futureverse.org/reference/with_progress.html" class="external-link">with_progress</a></span><span class="op">(</span><span class="op">{</span></span>
<span>  <span class="va">out_preliminary</span> <span class="op">&lt;-</span> <span class="fu"><a href="../reference/powRICLPM.html">pow