. tabi 27879 35177 29377 17201 \ 118 187 183 65, e chi2
| col
row | 1 2 3 4 | Total
-----------+--------------------------------------------+----------
1 | 27,879 35,177 29,377 17,201 | 109,634
2 | 118 187 183 65 | 553
-----------+--------------------------------------------+----------
Total | 27,997 35,364 29,560 17,266 | 110,187
Pearson chi2(3) = 17.7073 Pr = 0.001
Fisher's exact = 0.001
Hmmmm It worked for me?
m.p.
Tom Trikalinos wrote:
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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