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The Fisher exact test

Row1: 8; 18190

Row2: 162; 18163



The total number of cases= 36523
The smallest value= 8
The smallest marginal= 170

Use of * (starred) statistics is advised

The p for exactly this table= 0

One sided p-values: for p(O>=E):
p(O>=E): 0 *
p(O>E): 0
mid-p: 0
p(O<=E): 1

Two sided p-values p(O>=E|O<=E):
p= 0 * (sum of small p's)
p= 0 (left+right-exact)
p= -0 (left+right)
p= 0 (double the single sided p)
p(O>E|O<E)= 0 (sum of small p's)
mid-p 0 (sum of small p's)
For help go to SISA

Chi squares
(both with 1 degree of freedom):
Pearson's= 139.086 (p=0) *
LRX= 170.729 (p=-0)

More:

Two by Two table analysis
Chi squares, Risk Ratios, Odds Ratios
and other Table statistics

T-test, NNT, PARF
first column against row totals
first row against column totals