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Re: st: Interpreting random effect variance using GLLAMM versus GLLAPRED
From
Maarten buis <[email protected]>
To
[email protected]
Subject
Re: st: Interpreting random effect variance using GLLAMM versus GLLAPRED
Date
Sun, 2 Jan 2011 16:59:39 +0000 (GMT)
--- On Sun, 2/1/11, Denise Duffy wrote:
> I'm using GLLAMM to estimate an item response type model
> with individual random effects and am having trouble
> interpreting the random effect variance reported by GLLAMM.
<snip>
> I then estimated the individual random effects using
> gllapred (gllapred u, u). The variance of the mean
> estimate does not equal the GLLAMM-reported variance
> (.33895169). I would expect these to be equivalent.
There was quite a detailed discussion on this recently on
the statalist. That thread starts here:
<http://www.stata.com/statalist/archive/2010-12/msg00750.html>
Hope this helps,
Maarten
--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://www.maartenbuis.nl
--------------------------
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