Covariates (Level 1) : </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  AGE </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Deleted observation(s) : </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 3 observation(s) for missing all manifest items</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 0 observation(s) for missing at least 1 covariates</span>
<span class="r-out co"><span class="r-p