Table 2.

RDT performance compared with microscopy; sensitivity, specificity, PPV and NPV

RDT vs. microscopy (N = 2,434)	Microscopy positive	Microscopy negative	Total
RDT positive	119	180	299
RDT negative	27	2,108	2,135
Total	146	2,288
Sensitivity % (95% CI)	81.5 (67.9–90.2)
Specificity % (95% CI)	92.1 (89.9–93.9)
Positive predictive value % (95% CI)	39.8 (33.0–47.0)
Negative predictive value % (95% CI)	98.7 (97.6–99.3)

CI = confidence interval; NPV = positive predictive value; PPV = positive predictive value; RDT = rapid diagnostic test.