Bobby Gutierrez gave what looked like very interesting talks at the
last London Stata Users' Group meeting and Fall North American Stata
Users' Group meetings. I missed both meetings, but the slides look very
interesting and applicable to your situation:
http://repec.org/fnasug2008/gutierrez.pdf
Hope this helps,
Maarten
--- josemaria <[email protected]> wrote:
> Dear Stata listers:
> I am using xtmixed to compare children growth of two groups
> (variable=
> group, coded 0|1). The children (variable= id) were selected within
> counties (variable= county). Each child were measured (response
> variable=
> zscore) five times, at ages 6, 10, 14, 18, 22 months (variable= age),
> and I
> admit that each child has their own growth quadratic curve.
> Please, is the -command xtmixed zscore age agesquared group
> interactiongroupage interactiongroupagesquared || county: || id: age,
>
> cov(unstructured) var- adequate?
> Thanks for any help.
> José Maria
>
> Jose Maria Pacheco de Souza, Professor Titular (aposentado)
> Departamento de Epidemiologia/Faculdade de Saude Publica, USP
> Av. Dr. Arnaldo, 715
> 01246-904 - S. Paulo/SP - Brasil
> fones (11)3061-7747; (11)3768-8612
> fax (11)3714-2403
> www.fsp.usp.br/~jmpsouza
>
>
>
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
>
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room N515
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
