Table 1.

Agreement between bronchoalveolar lavage (BAL) and nasal swab (NS) or deep nasopharyngeal swab (NP) in detecting M. bovis in 62 calves with acute respiratory disease.

Sample	Detection method	Number of calves with each combination				Proportion of positive	Kappa (95% CI)	P (kappa)
		of results (BAL/compared method)				agreement
		+/+	+/–	–/+	–/–
NS	Culture	15	14	0	33	0.68	0.53 (0.34, 0.72)	0.000
NS	Real-time PCR	14	15	0	33	0.65	0.50 (0.31, 0.69)	0.000
NP	Culture	24	5	0	33	0.91	0.84 (0.7, 0.97)	0.000