BMC Veterinary Research

Table 3 Concordance between the VN test, DEXX PRRSV X3 Ab ELISA, M-A109-129 ELISA, M-A148-174 ELISA

From: Establishment of a peptide-based enzyme-linked immunosorbent assay for detecting antibodies against PRRSV M protein

	M-A109-129 ELISA			M-A148-174 ELISA			IDEXX PRRSV X3 Ab ELISA
	+	–	Total	+	–	Total	+	–	Total
VN
+	50	13	63	63	0	63	63	0	63
–	2	82	84	9	75	84	28	56	84
Total	52	95	147	72	75	147	91	56	147
kappa coefficient^a (95% CI)	0.7870 (0.7791-0.7949)			0.8772 (0.8710-0.8834)			0.6316 (0.6217-0.6453)
IDEXX PRRSV X3 Ab ELISA
+	48	43	91	72	19	91
–	4	52	56	0	56	56
Total	52	95	147	74	73	147
kappa coefficient^a (95% CI)	0.4020 (0.3972-0.4125)			0.7430 (0.7216-0.7634)

^aThe significance of kappa coefficient value. < 0, no agreement; 0 to 0.20, slight agreement; 0.21 to 0.40, fair agreement; 0.41 to 0.60, moderate agreement; 0.61 to 0.80, substantial agreement; and 0.81 to 1.0, almost perfect agreement

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ISSN: 1746-6148

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