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st: nonlinear growth curve in xtmixed


From   "josemaria" <jmpsouza@usp.br>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: nonlinear growth curve in xtmixed
Date   Fri, 12 Dec 2008 18:28:59 -0200

Dear Statalisters:
Judith D. Singer and John B. Willet, in their book "Applied Longitudinal Analysis", Oxford University Press, 2003, present, in pages 225-232, analysis for nonlinear growth curve using the PROC NLMIXED of SAS, and explain that, at the time of writing the book, Stata did not have yet the same capability.
This is also informed at the end of the page: "Stata Textbook Examples
Applied Longitudinal Data Analysis: Modeling Change and Event Occurrence
by Judith D. Singer and John B. Willett
Chapter 6: Modeling Discontinuous and Nonlinear Change",
site http://www.ats.ucla.edu/stat/stata/examples/alda/chapter6 :
 "Table 6.6 on page 231.

* Skipped these for now. Stata does not yet do nonlinear mixed models." Is it possible now to do such analysis in Stata?
Than you for any orientation.
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
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