Table 2.
The accuracy of RDT during 4 months of follow-up after the diagnosis of malaria (all species included)
| Time (days) | Nb | TP | FP | TN | FN | Ss | Sp | PPV | NPV | Q | Youden |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 to 7 | 992 | 116 | 61 | 803 | 12 | 0.906 | 0.929 | 0.655 | 0.985 | 0.984 | 0.836 |
| 8 to 14 | 221 | 6 | 7 | 208 | 0 | 1.000 | 0.967 | 0.462 | 1.000 | 1.000 | 0.967 |
| 15 to 21 | 123 | 9 | 4 | 109 | 1 | 0.900 | 0.965 | 0.692 | 0.991 | 0.992 | 0.865 |
| 22 to 28 | 91 | 20 | 0 | 70 | 1 | 0.952 | 1.000 | 1.000 | 0.986 | 1.000 | 0.952 |
| 28 to 35 | 76 | 25 | 1 | 48 | 2 | 0.926 | 0.980 | 0.962 | 0.960 | 0.997 | 0.906 |
| 36 to 42 | 64 | 19 | 0 | 44 | 1 | 0.950 | 1.000 | 1.000 | 0.978 | 1.000 | 0.950 |
| 43 to 49 | 46 | 10 | 1 | 35 | 0 | 1.000 | 0.972 | 0.909 | 1.000 | 1.000 | 0.972 |
| 50 to 56 | 33 | 7 | 0 | 26 | 0 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 |
| 57 to 90 | 151 | 29 | 0 | 119 | 3 | 0.906 | 1.000 | 1.000 | 0.975 | 1.000 | 0.906 |
| 91 to 120 | 86 | 14 | 0 | 72 | 0 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 |
RDT: Rapid diagnosis tests, Nb: Number of cases, TP: True positive, FP: False positive, TN: True negative, FN: False negative, Ss: Sensitivity, Sp: Specificity, PPV: Positive Predictive Value, NPV: Negative Predictive Value