Table 2.

A comparison of the diagnostic tools RDT, microscopy and PCR; and test of their accuracy

	RDT/PCR	Microscopy/PCR	RDT/microscopy
Neg	352/339	345/339	352/345
Pos	49/62	56/62	49/56
p value*	< 0.05	< 0.05	< 0.05
		Kappa co-efficient	0.83

RDT	Under 5 years (n = 150)	Under 5 years (n = 251)
	HIV positive (95% CI)	HIV negative (95% CI)
Sensitivity	83 (53.5–100)	78.6 (67.8–89.3)
Specificity	100 (98.9–100)	100 (99.1–100)
Positive predictive value	100 (97.8–100)	100 (99.3–100)
Negative predictive value	99 (98–100)	94.2 (91–97.4)

Microscopy	Under 5 years (n = 150)	Under 5 years (n = 251)
	HIV positive (95% CI)	HIV negative (95% CI)
Sensitivity (CI)	100 (99–100)	89.3 (81.2–97.4)
Specificity (CI)	100 (98.5–100)	100 (99.3–100)
Positive predictive value	100 (99.2–100)	100 (99–100)
Negative predictive value	100 (99.6–100)	97 (94.7–99.4)

* p value using McNemar’s test