Table 2.

Comparison of the performances of the direct cpn60 UT-targeted and nested PCR assay targeting F2nR2.

cpn60 UT PCR results	F2nR2 nested PCR results		Total
	Positive	Negative
Positive	36	4	40
Negative	2	27	29
Total	38	31	69
	95%CI	Low	High
Test sensitivity	0.947	0.071	0.876	1.018
Test specificity	0.871	0.118	0.753	0.989