Table 6.
Diagnostic accuracy of RDT for malaria infection by parasite density and age group (rainy season)
| Age | Parasite density | RDT Result | ||||
|---|---|---|---|---|---|---|
| (years) | (/μL) | N | positive (n) | negative (n) | Sensitivity (95% CI) | Specificity (95% CI) |
| < 1 | 0 | 15 | 6 | 9 | 60 | |
| 1-400 | 9 | 8 | 1 | 89 | ||
| 401-4000 | 18 | 17 | 1 | 94 | ||
| 4001-40000 | 22 | 22 | 0 | 100 | ||
| 40000+ | 20 | 20 | 0 | 100 | ||
| Total | 84 fdf(87%)(87%) | 73 (87%) | 11 (13%) | |||
| 1 - 4 | 0 | 57 | 22 | 35 | 61 | |
| 1-400 | 18 | 15 | 3 | 83 | ||
| 401-4000 | 69 | 66 | 3 | 96 | ||
| 4001-40000 | 50 | 50 | 0 | 100 | ||
| 40000+ | 56 | 56 | 0 | 100 | ||
| Total | 250 | 209 (84%) | 41 (16%) | |||
| 5 - 14 | 0 | 37 | 13 | 24 | 65 | |
| 1-400 | 17 | 14 | 3 | 82 | ||
| 401-4000 | 30 | 28 | 2 | 93 | ||
| 4001-40000 | 20 | 20 | 0 | 100 | ||
| 40000+ | 24 | 23 | 1 | 96 | ||
| Total | 128 | 98 (77%) | 30 (23%) | |||
| 15+ | 0 | 125 | 10 | 115 | 92 | |
| 1-400 | 19 | 11 | 8 | 58 | ||
| 401-4000 | 20 | 18 | 2 | 90 | ||
| 4001-40000 | 23 | 23 | 0 | 100 | ||
| 40000+ | 1 | 1 | 0 | 100 | ||
| Total | 188 | 63 (34%) | 15 (66%) | |||
| All | 0 | 234 | 51 | 183 | 78 | |
| 1-400 | 63 | 48 | 15 | 76 | ||
| 401-4000 | 137 | 129 | 8 | 94 | ||
| 4001-40000 | 115 | 115 | 0 | 100 | ||
| 40000+ | 101 | 100 | 1 | 99 | ||
| Total | 650 | 443 (68%) | 207 (32%) | |||
| All | Not infected | 234 | 51 | 183 | 78 (72 - 83) | |
| Infected | 416 | 392 | 24 | 94 (92- 96) | ||
PPV during rainy season: 88% (95% CI: 85 - 91%), NPV during rainy season: 88% (95% CI: 83 - 92%).