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st: pooled data using frontier comand


From   Ramiro Antonio Burga Villanueva <r.burga@pucp.pe>
To   statalist <statalist@hsphsun2.harvard.edu>
Subject   st: pooled data using frontier comand
Date   Thu, 15 Sep 2011 17:29:57 -0500

Hi
I am working with a very short panel (T=2) trying to estimate  a
technical efficiency model using the frontier command. First of all, I
haven't used xtfrontier  because I've read that the estimator are
consistent when T tends to  infinity. However, using frontier command
on a pooled data may be problematic due to correlation within  "i", so
 I would like to know some ways which could control for this
correlation.
Best regard,
Ramiro

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