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Re: st: user-specified nonlinear mixed effects models


From   "Stephen P. Jenkins" <stephenj@essex.ac.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: user-specified nonlinear mixed effects models
Date   Wed, 23 Oct 2002 16:14:14 +0100 (GMT Daylight Time)

On Wed, 23 Oct 2002 11:01:40 -0400 "Kristopher J. Preacher" 
<preacher.2@osu.edu> wrote:

> Dear Stata users,
> 
> We are making the switch from S-Plus to Stata. We need to know whether (and 
> if so, how) it is possible to fit nonlinear multilevel models (such as 
> exponential growth curves for a large sample of individuals with many 
> repeated measures) in Stata. In S-Plus we had been using the NLME command 
> to good effect. If anyone has sample code they could share, please e-mail 
> me off-list.

As the signatures at the end of each Statalist message remind us:

> *   For searches and help try:
> *   http://www.stata.com/support/faqs/res/findit.html
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/

The command -findit- is your friend!  (Think of it as a Stataish 
'Google'):

. findit multilevel
                                                                                          23 Oct 2002 16:08:48
Keyword search

        Keywords:  multilevel
          Search:  (1) Official help files, FAQs, and STBs
                   (2) Web resources from Stata and from other users


Search of official help files, FAQs, and STBs

SJ-2-1  st0005 . . . . . . . . . Estimation of generalized linear mixed models
        (help gllamm if installed)  S. Rabe-Hesketh, A. Skrondal, & A. Pickles
        Q1/02   SJ 2(1):1--21
        using adaptive quadrature, implements multilevel latent
        variable models including multilevel generalized linear
        mixed models

STB-53  sg129  . . . . . . . . . .  Generalized linear latent and mixed models
        (help gllamm6 if installed)  S. Rabe-Hesketh, A. Pickles, and C. Taylor
        1/00    pp.74--57; STB Reprints Vol 9, pp.293--307
        command to fit generalized linear latent and mixed models
        which include latent variable models, e.g., multilevel,
        item-response, ordered latent class, and error-in-covariate
        models


Web resources from Stata and other users

(contacting http://www.stata.com)

2 packages found (Stata Journal and STB omitted)
------------------------------------------------

descsave from http://fmwww.bc.edu/RePEc/bocode/d
    'DESCSAVE': module to export data set and machine-readable codebook /
    descsave is an extension of describe, creating up to 2 output / data sets.
    These are a Stata data file with 1 observation per / variable and data on
    the descriptive attributes of each variable / (name, storage type, format

gllamm from http://fmwww.bc.edu/RePEc/bocode/g
    'GLLAMM': program to fit generalised linear latent and mixed models /
    gllamm fits generalized linear latent and mixed models. These / models
    include Multilevel generalized linear regression models / (extensions of
    the simple random intercept models that may be / fitted in Stata using


(end of search)


What you need is -gllamm-, and the very latest version is the one 
available from the SSC-IDEAS archive. In an up-to-date Stata, you can 
then read more about it with 
	-ssc describe gllamm-
and install it directly with 
	-ssc install gllamm-


Stephen
----------------------
Professor Stephen P. Jenkins <stephenj@essex.ac.uk>
Institute for Social and Economic Research (ISER)
University of Essex, Colchester, CO4 3SQ, UK
Tel: +44 (0)1206 873374. Fax: +44 (0)1206 873151.
http://www.iser.essex.ac.uk

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



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