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st: xtfrontier - time dummies


From   "Arvind" <A.Yadav@lboro.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: xtfrontier - time dummies
Date   Thu, 2 Nov 2006 14:41:32 -0000

I am a new user of STATA. I am using xtfrontier for an unbalanced panel data of 50 firms over a 20 years time span. The questions worrying me are:
Does tsset is sufficient enough to capture time effect or do I need to define time dummies? How I can get efficiency scores (I am trying predict, te)?

My data set is in this format:
Firms Year Variables
1 1985
1 1986
1 2004
2 1985
2 1986
2 2004

Regards
Arvind.

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