Table 3 Accuracy of RDT and PCR in comparison with histology for detecting placental malaria infection at Gadarif Hospital, Eastern Sudan
| Â | Â | Histology | Â | Â | ||
|---|---|---|---|---|---|---|
| Â | Â | Positive | Negative | Total | Accuracy measure (95% CI) | |
RDT | Positive | 8 | 19 | 27 | Sensitivity | 17.4(8.4–30.4) |
|  | Negative | 38 | 85 | 123 | Specificity | 81.7(73.4–88.3) |
Total |  | 46 | 104 | 150 | Positive predictive value | 29.6(14.8–48.6) |
|  |  |  |  |  | Negative predictive value | 69.1(60.5–67.8) |
PCR | Positive | 3 | 18 | 21 | Sensitivity | 6.5 (1.7–16.7) |
|  | Negative | 43 | 86 | 129 | Specificity | 82.7(74.5–89.0) |
Total |  | 46 | 104 | 150 | Positive predictive value | 14.3(3.8–34.1) |
|  |  |  |  |  | Negative predictive value | 66.7(58.2–74.4) |