ting side question is
whether there are differences between early, mid, and late recruits.
</p>
<p>This data set contains an age and sex stratified random sample that
includes 7874 of the original 15759 subjects.  The original subject
identifiers and dates have been removed to protect patient identity.
Subsampling was done to further protect this information.
</p>


<h3>Source</h3>

<p>The primary investigator (A Dispenzieri) and statistician (T
Therneau) for the study.</p>


<h3>References</h3>

<p>A Dispe