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st: xtabond2 question


From   Ed Levitas <levitas@uwm.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: xtabond2 question
Date   Thu, 6 May 2004 11:21:11 -0500

Hello,

I have a question regarding the XTABOND2 command.  I'm attempting to run the
following model:

xtabond2 y l.y x1 x2 x3  , robust twostep ivstyle(l.y x1 x2 x3)

but get the following message:

repeated time values within panel
r(451);

I've rechecked my data with the DUPLICATES command and found no duplicated
observations based on my TSSET criterion.

Does anyone have any suggestions regarding the error I'm committing?

Thanks
Ed

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