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st: xtfrontier and frontier


From   giovanni federighi <federighi.giovanni@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: xtfrontier and frontier
Date   Wed, 30 Nov 2011 08:47:54 +0100

Dear Stata users,
I would like to analyze a panel dataset for 12 countries during a
period of 15 years using the stochastic frontier approach (in
particular, the Battese-Coelli model) to measure technical
efficiencies. Should I use xtfrontier that does not allow directly the
distinction between u and v or can I also use frontier, since in this
second case results seem also better?

Best regards,
Giovanni
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