I would think this is some sort of unfortunate data configurations...
you can try some other starting values -- say from -regress- or
-xtreg- or something.
On 9/9/06, Inna Khousnoullina <[email protected]> wrote:
I have Stata 8.2, xtmixed is not implemented until stata 9:(((
Have you any ideas about handling my problem?
--
Stas Kolenikov
http://stas.kolenikov.name
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