Performance Evaluation of Diagnostic Methods for Schistosoma mansoni Detection in Amhara Region, Northwest Ethiopia

Table 3

Detection rate and performance of FEC, KK, and STS techniques to diagnose S. mansoni against the gold standard among school children in ANRS, from October to December, 2019 ().

Method	Result	“Gold” standard		Sensitivity	Specificity	NPV	PPV
		Pos	Neg	% (95% CI)	% (95% CI)	% (95% CI)	% (95% CI)
FEC	Pos	43	0	41.0 (32-50.5)	100 (99.1-100)	87.0 (83.7-89.7)	100 (91.8-100)
	Neg	62	415
KK	Pos	67	0	63.8 (54.3-72.4)	100 (99.1-100)	91.6 (88.7-93.8)	100 (94.6-100)
	Neg	38	415
STS	Pos	85	0	81.0 (72.4-87.3)	100 (99.1-100)	95.4 (93.0-97.0)	100 (95.7-100)
	Neg	20	415

CI: confidence interval; PPV: positive predictive value; NPV: negative predictive value.