Table 2. Receiver Operator Characteristic (ROC) comparison of sensitivity and specificity of ELISA tests for Whole Mite Antigen extract (WMA) and Sar s 14.3 from week 8 to 20 post-infestation.

	WMA			Sar s 14.3
	IgG	IgG1	IgG2	IgG	IgG1	IgG2
AUC a	0.95	0.99	0.98	0.91	0.97	0.91
S.E b	0.019	0.004	0.012	0.025	0.015	0.027
Cut-off	0.43	0.49	0.45	0.93	1.02	0.95
Sensitivity c	90%	100%	95%	90%	97%	87%
Specificity c	90%	90%	90%	70%	92%	91%

^aAUC- area under curve.

^bS.E- standard error.

^cOptimum sensitivity and specificity determined at cut-off indicated.