All that is blood is not schistosomiasis: experiences with reagent strip testing for urogenital schistosomiasis with special consideration to very-low prevalence settings

Table 1 Reagent strip test performance in the three study sites

Study	TP	FP	FN	TN	Egg positive	Microhaematuria	Sensitivity	Specificity	PPV	NPV
Côte d’Ivoire, Tchologo	11	145	7	638	2.2 %	19.5 %	61.1 %	81.5 %	7.1 %	98.9 %
Chad, baseline survey	22	56	7	284	7.9 %	21.1 %	75.9 %	83.5 %	28.2 %	97.6 %
Chad, first follow-up survey	4	24	2	190	2.7 %	12.7 %	66.7 %	88.8 %	14.3 %	99.0 %
Chad, second follow-up survey	1	7	1	68	2.6 %	10.4 %	50.0 %	90.7 %	12.5 %	98.6 %
Côte d’Ivoire, Grand Moutcho	86	2	12	24	79.0 %	71.0 %	87.8 %	92.3 %	97.7 %	66.7 %

FN false negative (negative with reagent strip, positive with filtration), FP false positive (positive with reagent strip, negative with filtration), NPV negative predictive value, PPV positive predictive value, TN true negative (negative with both, reagent strip and filtration), TP true positive (positive with reagent strip and filtration)

ISSN: 1756-3305