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Re: st: xtmelogit


From   "JVerkuilen (Gmail)" <jvverkuilen@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: xtmelogit
Date   Wed, 14 Nov 2012 15:30:26 -0500

On Wed, Nov 14, 2012 at 1:36 PM, Szabo S.M. <S.M.Szabo@soton.ac.uk> wrote:
> Very grateful to all. I initially left it to run overnight and it still did not produce the results. But then I reduced the dataset by removing the unnecessary variables and reduced the number of options used. This seemed to help. I did not measure the time now, but  it takes a couple of hours, which seems acceptable. I will implement all recommendations as I go along.>

You may well have run into collinearity problems or locations of the
parameter space where the adaptive quadrature couldn't *quite* find a
solution. It didn't fail outright but was going to diverge. That's
usually the sign of a model that's too complex.

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