Performance Evaluation of Three Diagnostic Methods for Soil-Transmitted Helminth Infections among Schoolchildren in Amhara Region, Northwest Ethiopia

Table 4

Diagnostic agreement between any of the two methods (KK, MM, and STST) used for the detection of STHs from stool specimens attending selected primary schools in Amhara region, northwest Ethiopia from May to July, 2022 (N = 403).

Methods		STST		K-value	NOA (N, %)	NAEC (N, %)	SEK	χ2	value
		Pos	Neg
KK	Pos	111	4	0.905	387 (96.0)	235.2 (58.3)	0.023	330.563	≤0.001
	Neg	12	276
MM	Pos	114	7	0.906	387 (96.0)	232.8 (57.8)	0.023	330.813	≤0.001
	Neg	9	273
MM
KK	Pos	108	7	0.880	383 (95.0)	236 (58.6)	0.026	312.628	≤0.001
	Neg	13	275

NOA = number of observed agreements; NAEC = number of agreements expected by chance; SEK = standard error; K = Kappa; Pos = positive; Neg = negative.