ass="va">premium_df</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># Fit restricted model</span></span></span>
<span class="r-in"><span><span class="va">burn_rst</span> <span class="op">&lt;-</span> <span class="va">burn</span> <span class="op">|&gt;</span></span></span>
<span class="r-in"><span>  <span class="fu">restrict_coef</span><span class="op">(</span>restrictions <span class="op">=</span> <span class="va">zip_df</span><