le values for the Elixhauser score are:</p><ul><li><p><code>vw</code>, for the weights by van Walraven et al. (2009);</p></li>
<li><p><code>swiss</code>, for the Swiss Elixhauser weights by Sharma et al. (2021).</p></li>
</ul><p>Defaults to <code>NULL</code>, in which case an unweighted score will be used.</p></dd>


<dt id="arg-assign-">assign0<a class="anchor" aria-label="anchor" href="#arg-assign-"></a></dt>
<dd><p>A logical value denoting whether to apply a hierarchy of comorbidities: should a comorbidi