Table 5.

Contingency table and degree of agreement, with 95% confidence interval, between the different diagnostic tests using indices of positive and negative agreement (Ppos, Pneg). CATT = CATT/T. evansi, ELISA = ELISA/VGS RoTat 1.2, TL = immune trypanolysis, PCR = RoTat 1.2 PCR.

		CATT		ELISA		TL		PCR
		Pos	Neg	Pos	Neg	Pos	Neg	Pos	Neg
GST	Pos	20	5	19	2	18	3	16	9
	Neg	314	707	213	772	193	792	44	457
	Total	334	712	232	774	211	795	60	466
	Ppos	0.11 (0.07–0.16)		0.15 (0.09–0.21)		0.16 (0.10–0.22)		0.38 (0.23–0.51)
	Pneg	0.82 (0.80–0.84)		0.88 (0.87–0.90)		0.89 (0.87–0.90)		0.95 (0.93–0.96)
CATT	Pos			183	132	173	142	41	275
	Neg			49	642	38	653	19	201
	Total			232	774	211	795	60	476
	Ppos			0.67 (0.62–0.71)		0.66 (0.61–0.70)		0.22 (0.16–0.28)
	Pneg			0.88 (0.86–0.89)		0.88 (0.86–0.89)		0.58 (0.54 0.62)
ELISA	Pos					191	41	42	170
	Neg					20	753	15	263
	Total					211	794	57	433
	Ppos					0.86 (0.82–0.89)		0.31 (0.24–0.38)
	Pneg					0.96 (0.95–0.97)		0.74 (0.70–0.77)
TL	Pos							42	159
	Neg							15	275
	Total							57	434
	Ppos							0.33 (0.25–0.40)
	Pneg							0.76 (0.72–0.79)