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st: RE: error message in mixed models stata 9

From   "Nick Cox" <>
To   <>
Subject   st: RE: error message in mixed models stata 9
Date   Tue, 7 Mar 2006 12:45:16 -0000

This is a message of yearning from the innards of Mata. 

Assuming your command is legal, it is StataCorp's 


Herman van de Werfhorst
> if I want to run a random intercept mixed model (multilevel 
> model) with the following form, I get an error message which 
> I don't understand: 
> . xtmixed y i1 i2 g3 g4 || groupvar:
>                  <istmt>:  3499  _xtm_setup() not found
> where i1 and i2 are individual level variables, and g3 and g4 
> variables measured at the higher level in which individuals 
> are nested (at the level of the variable groupvar). 
> Does anyone know what   "<istmt>:  3499  _xtm_setup() not 
> found"    means? I have updated my stata 9 very recently.

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