Table 4 Accuracy of microscopy and RDT in detecting placental malaria infection in peripheral blood among 173 women at Mbale regional referral hospital between March and November 2010
| Â | Â | Placental histology | Â | Â | Â | |
|---|---|---|---|---|---|---|
+(n = 21) | (n = 152) | Total | Accuracy measure(95%CI) | |||
Microscopy | + | 17 | 12 | 29 | Sensitivity | 76.2(52.4-90.8) |
| Â | Â | 4 | 140 | 144 | Specificity | 92.1(86.3-95.7) |
| Â | Â | Â | Â | Â | PPV* | 57.1(37.4-74.9) |
|  |  |  |  |  | NPV‡ | 96.6(91.7-98.7) |
RDTs | + | 17 | 19 | 36 | Sensitivity | 80.9(57.4-93.7) |
| Â | Â | 4 | 133 | 137 | Specificity | 87.5(80.9-92.1) |
| Â | Â | Â | Â | Â | PPV | 47.2(30.7-64.2) |
| Â | Â | Â | Â | Â | NPV | 97.1(92.2-99.1) |
Microscopy | + | 19 | 27 | 46 | Sensitivity | 90.5(68.2-98.3) |
+RDTs | Â | 2 | 125 | 127 | Specificity | 82.2(75.0-87.7) |
| Â | Â | Â | Â | Â | PPV | 41.3(27.3-56.7) |
| Â | Â | Â | Â | Â | NPV | 98.4(93.9-99.7) |