the probabilities in one unit change. Therefore, when a type of exposure variable is <code>factor</code>, we allow users to specify two values of exposure variable including baseline (<span class="math inline">\(z_{0}\)</span>) and comparative level (<span class="math inline">\(z_{1}\)</span>) and derive the relative risks given those two exposure levels.</p>
<p><span class="math display">\[\frac{P(D = 1 \mid E = z_{1}, \mathbf{X} )}{P(D = 1 \mid E = z_{0}, \mathbf{X})}\]</span> The above is more generalize