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Re: st: xtmixed & PROC MIXED


From   Lucas Goossens <goossens@bmg.eur.nl>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: xtmixed & PROC MIXED
Date   Tue, 15 Dec 2009 15:33:53 +0100


Scott,

This is my PROC MIXED code:

proc mixed data=work.dataeq5d ORDER=DATA;
class visit PTNO male;
model change1=visit male eq5d1 /s;
repeated visit/type=un subject=PTNO;
run;

And this is my xtmixed code:


tabulate visit, generate(visit_)
xi: xtmixed Change1 i.visit Male EQ5D1 ||PTNO: visit_* , covariance(unstructured)  ///
noconstant nostderr nolrtest variance


(In my previous posting I referred to Joseph Coveney's answer on 6 Jan 2009. I must have done something wrong, because my question did not appear in the same thread.)


Best,
Lucas



Date: Fri, 11 Dec 2009 09:14:25 -0700
From: Scott Baldwin <baldwinlist@gmail.com>
Subject: Re: st: xtmixed & PROC MIXED

I think I could help you figure out what is going on here but would
need to see both the PROC MIXED code and xtmixed code you used. So if
you could post that information, I can give you some more help.

Best,
Scott






--
Lucas Goossens, MSc
institute for Medical Technology Assessment (iMTA)
institute for Health Policy and Management (iBMG)
Health Economics and Health Technology Assessment section

Erasmus University L3-092, Woudestein Campus
Burg. Oudlaan 50, 3062 PA Rotterdam
P.O. Box 1738, 3000 DR Rotterdam
The Netherlands

T +31 10 408 8582
F +31 10 408 9081
E goossens@bmg.eur.nl
I www.imta.nl
I www.bmg.eur.nl



--
Lucas Goossens, MSc
institute for Medical Technology Assessment (iMTA)
institute for Health Policy and Management (iBMG)
Health Economics and Health Technology Assessment section

Erasmus University L3-092, Woudestein Campus
Burg. Oudlaan 50, 3062 PA Rotterdam
P.O. Box 1738, 3000 DR Rotterdam
The Netherlands

T +31 10 408 8582
F +31 10 408 9081
E goossens@bmg.eur.nl
I www.imta.nl
I www.bmg.eur.nl



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