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Table 4 Performance characteristics of Hexagon Malaria Combi™ rapid test at different parasite densities in detecting the different Plasmodium species.

From: Performance and usefulness of the Hexagon rapid diagnostic test in children with asymptomatic malaria living in the Mount Cameroon region

Parasite density Sensitivity % (95%CI) Specificity % (95%CI) Accuracy % Reliability
P. falciparum only
<500 50 (33.4–66.6) 83 (52–98) 66.6 0.6
501–5,000 76.9 (62.9–90.9) 87 (60–98) 97.5 0.8
>5,000 100 (99.7–100) 92 (82–97) 98 0.8
Total 87.50 (76.5–98.5) 98 (93–100) 95.6 0.8
Non-falciparum species
<500 0 (0–94.5) 67 (43–85) 98 0.7
501–5,000 66.7 (34–99.3) 88(47–100) 93 0.7
>5,000 100 (99.7–100) 98.(89–100) 96.5 0.7
Total 80 (52.3–99.6) 92 (83–97) 94 0.8
Mixed infections with Plasmodium falciparum (Plasmodium vivax not included)
<500 50 (28.6–71.4) 62 (46–75) 95.5 0.7
501–5,000 66.7 (46.51–86.8) 66(53–78) 92 0.7
>5,000 94.1 (46.51–99.9) 92 (82–97) 93.1 0.8
Total 84 (68.3–99.7) 95 (74–100) 89.5 0.8