Table 2 Sensitivity, specificity, predicative values of optical microscopy (OM) and NADAL® Malaria Test 4 species with PCR as gold standard
|  | Positive PCR (n = 160) | Negative PCR (n = 72) | Sensitivity % (CI95) | Specificity % (CI95) | PPV % (CI95) | NPV % (CI95) |
|---|---|---|---|---|---|---|
Microscopy | ||||||
 Positive (n = 112) | 108 | 4 | 68.8 (60.5–75.5) | 94.4 (86.4–98.5) | 96.4 (91.2–98.6) | 57.6 (51.8–63.3) |
 Negative (n = 118) | 50 | 68 | ||||
 Missing (n = 2) | 2 |  |  |  |  |  |
NADAL test | ||||||
 Positive (n = 112) | 105 | 7 | 65.6 (57.7–72.9) | 90.3 (81.0–96.0) | 93.8 (88.0–96.8) | 54.2 (48.5–59.7) |
 Negative (n = 120) | 55 | 65 | ||||
|  |  | P-value = 0.212* |  |  |  |  |