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st: venn diag query


From   cthompson@dfpm.utah.edu
To   Statalist@hsphsun2.harvard.edu
Subject   st: venn diag query
Date   Mon, 01 Dec 2003 16:54:26 -0700

Greetings STATAlisters - 
The query that follows may have a straightforward response, 
however, I'm at a loss for a solution so I'm posing the 
question here.  Suppose I have three variables and I generate a 
Venn diagram to assess overlap, is there a way to quantify the 
overlap (aside from the percent returned by the Venn Diagram) 
and/or run a statistical test on the overlap?  My colleague 
suggested the kappa statistic as a means for quantifying the 
overlap but I disagree since kappa measures agreement - can 
anyone suggest an alternative and/or confirm my colleague's 
suggestion? 
Many Thanks,
Clint Thompson
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