Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: help for using xtmixed


From   josemaria <jmpsouza@usp.br>
To   statalist@hsphsun2.harvard.edu
Subject   st: help for using xtmixed
Date   Mon, 17 Nov 2008 17:23:55 -0200

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/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index