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st: RE: Help using xi: with xtreg


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Help using xi: with xtreg
Date   Mon, 6 Jun 2005 13:20:07 +0100

Stata is objecting to the the period, which 
perhaps should be an asterisk. 

Nick 
n.j.cox@durham.ac.uk 

Rodney Andrews
 
> I'm having problems using the expansion interaction with xtreg. I am
> attempting to include cross-sectional specific trend terms in my
> regression. Each time I get a r(101) time series operators not allowed
> error message.
> 
> Here is my specification:
> 
> xi: xtreg  y x1 x2   i.post*x1 i.crossectionid.trend,xtreg

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