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Re: st: fisher's exact with survey weights


From   Steve Samuels <[email protected]>
To   [email protected]
Subject   Re: st: fisher's exact with survey weights
Date   Mon, 8 Mar 2010 10:54:56 -0500

Exact tests do not apply to survey data in general. Exact tests
compute probabilities based on  a formal model of the data generating
scheme (e.g. independent multinomial sampling with fixed marginals for
Fisher's Exact test).  Survey inference is based on variation between
samples of the same complex design.

Steve

On Mon, Mar 8, 2010 at 5:30 AM, Laura Vanderbloemen <[email protected]> wrote:
> can anyone advise a friend who would like to be able to get a fisher's
> exact test with a command like this:
>
> svy:tab agebirth_cat2 modebirth if parity==0, exact
>
> It evidently doesn't work. I'm not that familiar with her dataset, but
> thought I would try to help her find an answer.
>
> thanks and best wishes
>
>
>
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> *   http://www.stata.com/help.cgi?search
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> *   http://www.ats.ucla.edu/stat/stata/
>



-- 
Steven Samuels
[email protected]
18 Cantine's Island
Saugerties NY 12477
USA
845-246-0774

*
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