Table 6.
Diagnostic accuracy of the different RDTs for each species, prospective samples
Species | RDT brand | Number of samples tested | Correctly identified by RDT (number) | % Sensitivity (95% CI) |
P. falciparum | SDFK40 | 137 | 108 | 78.8 (75.3-81.1) |
OptiMAL | 137 | 125 | 91.2 (87.7-93.9) | |
SDFK60 | 137 | 136 | 99.3 (96.0-99.9) | |
Non-falciparum | SDFK40 | 28 | 23 | 82.1 (72.9-82.1) |
OptiMAL | 28 | 17 | 60.7 (40.6-78.5) | |
SDFK60 | 28 | 20 | 71.4 (51.3-86.8) | |
P. vivax | SDFK40 | 14 | 13 | 92.9 (66.1 - 99.8) |
OptiMAL | 14 | 14 | 100 (76.8-100) | |
SDFK60 | 14 | 13 | 92.9 (66.1 - 99.8) | |
P. ovale | SDFK40 | 13 | 10‡ | 76.9 (46.2-95.0) |
OptiMAL | 13 | 2 | 15.4 (1.9-45.6) | |
SDFK60 | 13 | 6 | 46.2 (19.2-74.9) | |
P. malariae* | SDFK40 | 1 | 0 | |
OptiMAL | 1 | 1 | ||
SDFK60 | 1 | 1 | ||
Plasmodium negative† | SDFK40 | 15 | 10 | |
OptiMAL | 15 | 3 | ||
SDFK60 | 15 | 4 |
* Too few samples to calculate sensitivity
† Included samples were negative by microscopy and PCR, but positive by the OptiMAL and/or the SDFK60
‡ Incorrect diagnosis consisted of two samples diagnosed as Plasmodium negative and one sample diagnosed as a single P. falciparum or a mixed infection of P. falciparum with one or more of the non-falciparum species.