Table 2.

The statistical contrast across the three batches (P-value).

Sample site	Batch (Farm) (No. of Campylobacter positive samples/total no. of samples)		P-value
Cloacal swabs	1 (19/30)	2 (20/20)	0.317
	1 (19/30)	3 (3/22)	0.000∗
	2 (20/20)	3 (3/22)	0.000∗
After plucking	1 (22/30)	2 (18/21)	0.295
	1 (22/30)	3 (14/15)	0.118
	2 (18/21)	3 (14/15)	0.480
After evisceration	1 (24/30)	2 (17/22)	0.814
	1 (24/30)	3 (12/15)	1.000
	2 (17/22)	3 (12/15)	0.845
After washing	1 (23/30)	2 (20/21)	0.076
	1 (23/30)	3 (14/20)	0.602
	2 (20/21)	3 (14/20)	0.034∗
After chilling	1 (7/8)	2 (10/10)	0.264
	1 (7/8)	3 (10/10)	0.264
	2 (10/10)	3 (10/10)	N

“N” means no statistics are computed; “^∗” resembles P < 0.05.