Nick,
Would love to, but don't have the documentation. I've already spent more
than enough on software and other Stata books. :-)
C.
> This refers to correlation structures
> in time. For more details, see the documentation
> on -xtgee-.
>
> Nick
> [email protected]
>
> Clive Nicholas
>>
>> Forgive me for being thick, but how many different 'structures of
>> correlation' are there? I'm only aware of two: bivarate and
>> canonical!
>>
>>
>> >>> (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.
>> >
>
> *
> * 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/
>
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:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
