ional on <span class="math inline">\(\mathbf{X}\)</span>. Unlike adjusted odds ratio, these ratio depend on baseline value of exposure <span class="math inline">\(z\)</span> under logistic regression.</p>
<p><span class="math display">\[\frac{P(D = 1 \mid E = z+1, \mathbf{X} )}{P(D = 1 \mid E = z, \mathbf{X})}\]</span></p>
</div>
<div id="nominal-exposure-variable" class="section level3">
<h3>Nominal exposure variable</h3>
<p>On the other hand, when exposure variable is nominal, it is impossible to compare 