Sarah,
Forgive me for being thick, but how many different 'structures of
correlation' are there? I'm only aware of two: bivarate and canonical!
C.
>>> (1) I cannot successfully fit an -xtgee- model (ie, xtgee [depvar]
>>> [varlist], family(binomial) link(probit) i(id) t(waves38)). All I get
>>> is
>>> this error message: "estimates diverging (absolute correlation > 1)
>>> r(430);". Uhh? And how can this be got round?
>
> You don't mention what correlation structure you are specifying. I often
> have this problem when I specify unstructured correlation - which is the
> most general. If this is the case, you may solve your problem by trying a
> different (appropriate) correlation structure.
>
> Just a thought...
>
> Sarah
>
>
>
>
>
>
> Sarah A. Mustillo, Ph.D
> Department of Psychiatry and Behavioral Sciences
> Duke University School of Medicine
> Box 3454
> Durham NC 27710
>
> 919 687-4686 x231
> *
> * For searches and help try:
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>
Yours,
CLIVE NICHOLAS,
Politics Building,
School of Geography, Politics and Sociology,
University of Newcastle-upon-Tyne,
Newcastle-upon-Tyne,
NE1 7RU,
United Kingdom.
*
* For searches and help try:
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* http://www.ats.ucla.edu/stat/stata/
