Table 4. Se, Sp, PPV and NPV of M. haemolytica, H. somni, M. bovis and P. multocida isolates at day-0 and 1^st BRD-treatment.

Sample Time	Isolate	Se	Sp	PPV	NPV
Day-0	M. haemolytica	.11	.91	.49	.60
	P. multocida	.13	.90	.43	.59
	H. somni	.01	.99	.43	.59
	M. bovis	.01	.99	.30	.59
1st BRD-treatment	M. haemolytica	.32	.63	.51	.43
	P. multocida	.08	.92	.55	.45
	H. somni	.07	.96	.60	.46
	M. bovis	.18	.66	.58	.47