Table 2. Comparative specificity in different control groups.

Subjects	N	Positive	Negative	% Specificity (95% CI)
Endemic Controls	250	40	210	84(78.9–88%)
Healthy Controls	250	0	250	100 (98.5–100%)
Different Disease (Non VL)	250	0	250	100(98.5–100%)
Total	750	40	710	94.6 (92.8–96.1%)