Table II.

Adjusted reliability measures to test agreement between agar dilution (AD) and E-test for 10 antimicrobials for 233 Campylobacter coli isolates recovered from 80 swine farms in Ontario

				Categories
	Agreement (%)			S, I, R	S, (I + R)a				(S + I), Rb
Antimicrobial	A	Ba	Cb	Weighted kappa	Kappa	PI	BI	PABAK	Kappa	PI	BI	PABAK
Ciprofloxacin	96	96	97	0.45	0.36	0.93	0.04	0.92	0.49	0.95	0.03	0.95
Azithromycin	73	73	73	0.25	0.25	0.59	0.27	0.46	0.25	0.59	0.27	0.46
Clindamycin	73	81	83	0.50	0.18	0.75	0.19	0.62	0.57	0.45	0.14	0.67
Erythromycin	78	91	85	0.58	0.13	0.89	0.09	0.82	0.62	0.49	0.13	0.71
Nalidixic Acid	15	18	82	0.15	0.02	0.07	0.82	−0.62	0.34	0.70	0.14	0.65
Ampicillin	27	33	79	0.22	0.05	0.03	0.67	−0.34	0.35	0.66	0.17	0.58
Chloramphenicol	75	75	97	0.17	0.03	0.64	0.25	0.5	−0.007	0.97	0.02	0.95
Gentamicin	99	99	~100	0.00	0.00	0.99	0.00	0.98	0.00	0.99	0.00	0.99
Streptomycin	84	86	85	0.68	0.66	0.41	0.14	0.72	0.66	0.37	0.09	0.71
Tetracycline	76	84	79	0.66	0.67	0.25	0.16	0.68	0.58	0.12	0.20	0.57

^aIntermediate isolates were categorized as resistant.

^bIntermediate isolates were classified as susceptible.

A — susceptible, intermediate and resistant categories; PI — preference index; BI — bias index; PABAK — prevalence-adjusted bias-adjusted kappa.