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Re: st: question on gllamm (multilevel logit)


From   "Stas Kolenikov" <skolenik@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: question on gllamm (multilevel logit)
Date   Mon, 20 Mar 2006 16:46:45 -0600

Well a number of strange things may be happening with your model
specification and your data... Check that you don't have
underidentified model (in other words, that you are not estimating the
same constant or same slope twice); and check that you have the most
recent version of -gllamm- and all the required programs (see
gllamm.org). Without any further information, nobody on this list will
be able to help you -- Nick Cox FAQ makes all sorts of suggestions as
to what should be included in your posting.

On 3/20/06, sj2033@columbia.edu <sj2033@columbia.edu> wrote:
>  I'm trying to estimate logistic multilevel model with random
> coefficients, using gllamm command with 'adapt' option. When I
> submit the command, STATA calculates Initial values for fixed
> effects, but keeps giving error messege of "Log-likelihood cannot
> be computed" when running adaptive quadrature. Does anybody know
> why this happens and how to get around this problem? Thanks
> *
> *   For searches and help try:
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>


--
Stas Kolenikov
http://stas.kolenikov.name

*
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*   http://www.ats.ucla.edu/stat/stata/



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