html" class="external-link">lm</a></span><span class="op">(</span><span class="va">nodes</span> <span class="op">~</span>  <span class="va">age.factor</span> <span class="op">+</span> <span class="va">sex.factor</span> <span class="op">+</span> <span class="va">obstruct.factor</span> <span class="op">+</span> <span class="va">perfor.factor</span>,</span></span>
<span class="r-in"><span>  data<span class="op">=</span><span class="va">colon_s</span><span class="op">)</span></span></span>
<span class="r-in"><s