In my opinion GEE is exactly what you need.
I would organize the data so that you have an ID-column and a FAMID-column.
Panel ID variable would be your FAMID.
Try this one:
. iis is FAMID
. xtgee dep_var indep_var, family(binomial 1) link(logit) corr(exchangeable)
Hope this helps.
Marcus
> sarah,
>
> no i haven't time-series (panel) data.
> i have just variables like in a cross-sectional (or case-control) study,
> with only one measurement for each variable, and i am trying to repeat the
> kind of logistic analysis (taking clustering into account) that other
> people
> apparently performed using a gee model with cross-sectional data.
>
> using the cluster option of logistic are gee estimations used at all in
> the
> stata ado file?
>
> my question is the following: is it possible at all to rearrange
> cross-sectional data so that gee-glm models can be used? or this is an
> impossible operation to do? may be duplicating the one-time measurements
> so
> to have kind of longitudinal data, or in some other way?
> in sum, is there any possible (even a bit artificial) way to use gee-glm
> models for one-time measurements data?
>
> thanks for your help.
>
> nora
>
>
>
>
>
>
> >From: "Sarah A. Mustillo" <[email protected]>
> >Reply-To: [email protected]
> >To: [email protected]
> >Subject: Re: st: 'xtgee' for logistic regression
> >Date: Mon, 19 Jul 2004 11:09:47 -0400
> >
> >Nora -
> >
> >Do you have time-series data? Just from what you've said, I'm guessing a
> >GEE model might not be your best option for what you are trying to do.
> >
> >The logistic command does have a cluster option. So, you could do:
> >
> >logistic dep_var indep_var, cluster(famvar)
> >
> >If this doesn't help, write back with more details about what you are
> >trying to model.
> >
> >Sarah
> >
> >Nora Ghaemi wrote:
> >
> >>dear statalisters,
> >>
> >>i have to run a logistic regression that has to take into account
> >>clustering of subjects into families.
> >>the command 'logistic' works but does not account for clustering, so the
> >>standard errors are smaller that they should be.
> >>
> >>i am trying to use on the same dataset the command xtgee:
> >>
> >>xtgee dep_var indep_var, family(binomial) link(logit) i(id)
> >>
> >>
> >>but invariably i get this response from stata:
> >>
> >>estimates diverging (absolute correlation > 1)
> >>r(430);
> >>
> >>
> >>should I rearrange the data somehow in order to run �xtgee�? it was my
> >>understanding that xtgee does not need to �tsset�
> >>
> >>can anyone help me with this issue?
> >>
> >>thanks a lot!
> >>
> >>nora
> >>
> >>_________________________________________________________________
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> >>
> >>*
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> >>
> >
> >--
> >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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> >* http://www.ats.ucla.edu/stat/stata/
>
> _________________________________________________________________
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