dden="true" tabindex="-1"></a>                    <span class="at">covariates =</span> <span class="fu">list</span>(<span class="st">&quot;1-2&quot;</span><span class="ot">=</span><span class="er">~</span>years, <span class="st">&quot;2-1&quot;</span><span class="ot">=</span><span class="er">~</span>years, </span>
<span id="cb125-3"><a href="timedep.html#cb125-3" aria-hidden="true" tabindex="-1"></a>                                      <span class="st">&quot;2-4&quot;</span><span class="ot">=</span><span c