2</span>, <span class="fl">1</span>, <span class="fl">1</span><span class="op">)</span>, lwd <span class="op">=</span> <span class="fl">2</span>,</span></span>
<span class="r-in"><span>       xlab <span class="op">=</span> <span class="st">"Follow-up time"</span>, ylab <span class="op">=</span> <span class="st">"Probabilities"</span><span class="op">)</span></span></span>
<span class="r-plt img"><img src="mixed_model-3.png" alt="" width="700" height="433"></span>
<span class="r-in"><span></span></span>
<spa