Malaria Journal

Table 4 Performance of RDTs and microscopy compared to PCR results

From: Distribution of Plasmodium species and assessment of performance of diagnostic tools used during a malaria survey in Southern and Western Provinces of Zambia

	PCR			Sensitivity (95% CI)	Specificity (95% CI)	PPV (95% CI)	NPV (95% CI)
	Positive	Negative		Sensitivity (95% CI)	Specificity (95% CI)	PPV (95% CI)	NPV (95% CI)
RDTs
Positive	230	73	303	75.5% (70.4, 80.4)	94.2% (92.8, 95.4)	75.9% (70.7, 80.6)	94.1% (92.1,95.4)
Negative	74	1190	1264
Total	304	1263	1567

	PCR			Sensitivity (95% CI)	Specificity (95% CI)	PPV (95% CI)	NPV (95% CI)
	Positive	Negative		Sensitivity (95% CI)	Specificity (95% CI)	PPV (95% CI)	NPV (95% CI)
Microscopy
Positive	173	29	202	56.9% (51.1, 62.5)	97.7% (96.7, 98.5)	85.6% (80.0, 90.2)	90.4% (88.7, 91.9)
Negative	131	1234	1365
Total	304	1264	1567

PPN: positive predictive value; NPV: negative predictive value

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ISSN: 1475-2875

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