t;</span> X1         1.69460 1.00509   1.686 0.09179</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Time:X1   -0.39408 0.22293  -1.768 0.07711</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Variance-covariance matrix of the random-effects:</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>           intercept    Time</span>
<span class="r-out 