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Re: st: pooled data using frontier comand

From   Robson Glasscock <>
Subject   Re: st: pooled data using frontier comand
Date   Fri, 16 Sep 2011 07:49:33 -0400

See -help robust- or -help cluster-

On Thu, Sep 15, 2011 at 6:29 PM, Ramiro Antonio Burga Villanueva
<> wrote:
> 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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