5     3.048     5.793     0.7199 </span></span>
<span><span class="co">## fev$fev:    Str  yes   3.169     3.751     4.872     0.9692</span></span></code></pre>
<p>From the output, we can see that 96.92% of the individuals in this
dataset who smoke (smoking status 1) had an FEV greater than 2 L/sec,
and 71.99% of the individuals in this dataset who were nonsmokers had an
FEV greater than 2 L/sec. </p>
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