st: Getting Beta's with esttab after xtmixed

[Filip Van Droogenbroeck <filip.van.droogenbroeck@vub.ac.be>]

Hello, everybody,

I'm trying to get beta's through esttab after running xtmixed. I found the following post: http://www.stata.com/statalist/archive/2008-05/msg00024.html which gives some information but I wonder how the beta's are calculated through esttab and if they can be trusted after xtmixed command? 
I'm doing the following:

********************************************************************
xtmixed SomHoudingJoden || schoolr:, mle variance
estimates store m1
xtmixed SomHoudingJoden leeftijd geslacht ||  schoolr:, mle variance
estimates store m2

esttab m1 m2, wide beta p nopar nostar transform(ln*: exp(2*@)
2*exp(2*@))  eqlabels("" "var(schoolr)" "var(_cons)" "var(Residual)",
none)
*********************************************************************

This gives me the beta's. Are these correct or are they only correct when
doing normal linear regression? There is also no option in xtmixed
to get beta's directly and this is also not available in other statistical programs it seems. Is their a good reason for this?

Thank you very much,
Kind regards,
Filip Van Droogenbroeck
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