Table 2. Comparison of the IPMA with VNT in 198 serum samples.

	VNT			% agreementc	IPMA
IPMA	No.posa	No.negb	Total		Sensitivityd	Specificitye
No.pos	86	0	86
No.neg	9	103	112	95.5	0.91	1
Total	95	103	198

^a No.pos = number of sera with PPRV antibodies.

^b No.neg = number of sera without PPRV antibodies.

^c (No.pos in both IPMA and VNT) + (No.neg in both IPMA and VNT) / n.

^d (No.pos in both IPMA and VNT) / (No.pos in VNT).

^e (No.neg in both IPMA and VNT) / (No.neg in VNT).