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<span>    <span class="fu"><a href="reference/stratify.html">stratify</a></span><span class="op">(</span><span class="op">~</span> <span class="va">STUDY</span><span class="op">)</span> <span class="op"><a href="https://magrittr.tidyverse.org/reference/pipe.html" class="external-link">%&gt;%</a></span></span>
<span>    <span class="fu"><a href="reference/binning.html">binning</a></span><span 