/span></span>
<span><span class="co">#&gt; sexfemale                                                      -0.1687 0.2778</span></span>
<span><span class="co">#&gt; value(log(serBilir))                                            1.3764 0.2307</span></span>
<span><span class="co">#&gt; value(log(serBilir)):ns(year, k = c(3, 6, 9), B = c(0, 14.5))1 -0.2749 0.2747</span></span>
<span><span class="co">#&gt; value(log(serBilir)):ns(year, k = c(3, 6, 9), B = c(0, 14.5))2 -0.0072 0.3547</span></span>
<span><span cl