st: _tabi, exact_ gives obviously wrong P-value

[Tom Trikalinos <ttrikalin@mac.com>]

Dear all,
Perhaps I miss something, but

. tabi 27879 35177 29377 17201 \ 118 187 183 65, e chi2
 yields Fisher's exact = 1.000
Pearson's Chi2(3) =17.7, Pr =0.001

StatXact calculates the P-value as 0.0005
The command seems to work properly for smaller numbers or different 
table geometries.


PS.
1. I have a fully updated Intercooled STATA 8.2 (ado & executable) 
running on a fully updated Mac (Panther)
2. There is no _tabi_ command in my personal directory overriding the 
updated _tabi_
. which tabi
/Applications/Stata/ado/updates/t/tabi.ado
*! version 2.0.5  13jul2004
3. the same table as 4x2 gives the same numbers
4. the command exits with _rc 0 --> hence all's OK, right?
5. Probably there's no excuse for Fisher's exact in this table, but 
let's not stay there

Tom Trikalinos, MD

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