Table 2.

Contingency table between the categorized rates of neutralizing antibody detection methods of ELISA and fluorescence immunochromatography (FIC). Cut-off values of ELISA and fluorescence immunochromatography are 30% and 20%, respectively. The accuracy index is 36.8% showing fair agreement.

	FIC (%)
ELISA (%)	[0–20)	[20–50)	[50–80)	[80–100]
[0–30)	1	4	2	1
[30–50)	0	4	8	0
[50–80)	2	6	59	0
[80–100]	0	1	229	83