span class="st">"(1|country) + (1|year)"</span><span class="op">)</span></span>
<span></span>
<span><span class="co"># Check formula</span></span>
<span><span class="fu"><a href="https://rdrr.io/r/base/summary.html" class="external-link">summary</a></span><span class="op">(</span><span class="va">specs</span><span class="op">)</span></span>
<span><span class="co">#&gt; Setup for the Specification Curve Analysis</span></span>
<span><span class="co">#&gt; -------------------------------------------</span></sp