Antimicrobial resistance and characterisation of staphylococci isolated from healthy Labrador retrievers in the United Kingdom

Table 2 Cross tabulation of the results of 172 staphylococcal isolates classified as resistant or susceptible to the antimicrobials tested in this study by both MIC and disc diffusion testing

Antimicrobial resistance			MIC
			No	Yes	Total
Oxacillin (OX)	Disc diffusion	No	50	10	60
		Yes	2	110	112
		Total	52	120	172
		Kappa = 0.842
			No	Yes	Total
Oxacillin mecA positive		No	115	0	115
		Yes	1	56	57
		Total	116	56	172
		Kappa = 0.987
			No	Yes	Total
Ciprofloxacin (CIP)		No	146	0	157
		Yes	14	12	15
		Total	160	12	172
		Kappa = 0.593
			No	Yes	Total
Gentamicin (GM)		No	156	1	157
		Yes	0	15	15
		Total	156	16	172
		Kappa = 0.965
			No	Yes	Total
Fusidic acid (FA)		No	36	5	41
		Yes	25	106	131
		Total	61	111	172
		Kappa = 0.589
			No	Yes	Total
Cefalexin (CFX)		No	117	15	132
		Yes	0	40	40
		Total	117	55	172
		Kappa = 0.784
			No	Yes	Total
Cefovecin (CVN)		No	130	11	141
		Yes	0	31	31
		Total	130	42	172
		Kappa = 0.810
			No	Yes	Total
Tetracycline (T10)		No	148	1	149
		Yes	0	23	23
		Total	148	24	172
		Kappa = 0.975
				Yes	Total
Trimethoprim-sulfamethoxazole (TS)		No	156	2	158
		Yes	3	11	14
		Total	159	13	172
		Kappa = 0.799
			No	Yes	Total
Clindamycin (CD)		No	148	2	150
		Yes	4	18	22
		Total	152	20	172
		Kappa = 0.837

ISSN: 1746-6148