t;-</span> <span class="fl">5</span>                   <span class="co"># degrees of freedom for spline background trend</span></span>
<span></span>
<span><span class="va">rec</span> <span class="op">&lt;-</span> <span class="fu"><a href="../reference/recipe.html">recipe</a></span><span class="op">(</span><span class="va">form</span>, <span class="va">kennel_2020</span><span class="op">)</span> <span class="op">|&gt;</span></span>
<span>  <span class="fu"><a href="../reference/step_distributed_lag.html">ste