> Skimming through the Statalist archives, it looks like if you really really
> really need Fisher's Exact Test for tables like this, then set your
> computer running and check back every few hours\days\weeks to see if it has
> finished yet. Or, use software that has a faster algorithm -- in a message
> 2 years ago Richard Goldstein suggested StatXact. SPSS has an exact tests
> module but I've never used it.
>
> But, do you really need this? Joseph Coveney has suggested one alternative
> that may be more appropriate anyway. Sometimes, too, people just combine
> sparse categories and use a chi-square test. My guess (possibly wrong) is
> that you won't see Fisher's Exact test reported very often for tables like
> this - 5 or 10 years ago people probably didn't have the hardware to run it
> even if they wanted to.
>
A program which will do all of the combining for you and derive several novel p-values for chi-squared is called clump (see net from http://www.mds.qmw.ac.uk/statgen/dcurtis/software.html ). A version was at one stage written by Adrian Mander for Stata (although it only derives two of the four stats calculated in the standalone). A quick search reveals that clump doesn't reside in any archives at present, and Adrian Manders web-site seems to have disapeared, but if you'd like a copy I can mail them ado and help files.
Regards
Neil
--
Answer : Because it breaks the logical sequence of discussion
> Question : What's wrong with top-posting?
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