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st: Non-nested clusters


From   Bert Jung <bjung59@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Non-nested clusters
Date   Sun, 27 Sep 2009 00:15:47 -0400

Dear Statalisters,

I have a repeated cross-section of individuals in states (2 time
periods) and want to run a difference in difference with state-year
clusters.  Since these cluster variables are not nested, how can I
include this in -vce(cluster XX)-?

Cheers,
Bert
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