Table 2 Sensitivity and specificity of RDTs in the longitudinal study and CSS in Korogwe and Muheza districts
| Â | Â | Positive rate | Â | Â | |
|---|---|---|---|---|---|
Study type | Category (n) | Microscopy (%, 95% CI) | RDTs (%, 95% CI) | Sensitivity (%, 95% CI) | Specificity (%, 95% CI) |
Longitudinal study | Under-fives + fever (n = 2116) | 27.8 (25.9-29.7) | 31.9(29.9-33.9) | 92.1(89.9-94.3) | 91.3(89.9-92.7) |
| Â | Under-fives, no fever(n = 2159) | 12.1(10.7-13.5) | 14.3(12.8-15.8) | 85.4(81.1-89.7) | 95.6(94.7-96.5) |
| Â | Above 5 years + fever (n = 3750) | 37.3(36.0-39.0) | 48.6(47.0-50.2) | 92.3(90.9-93.1) | 77.5(75.8-79.8) |
| Â | Above 5 years, no fever (n = 10186) | 15.0(14.3-15.7) | 22.1(21.3-22.9) | 84.6(82.8-86.4) | 89.0(88.2-89.6) |
| Â | Overall (18213) | 20.8(20.2-21.4) | 27.8(27.1-28.5) | 88.6(87.5-89.7) | 88.2(87.7-88.7) |
CSS | Under-fives + fever (n = 83) | 32.5(22.4-42.6) | 41.0(30.4-51.6) | 96.3(89.0-100.0) | 85.7(76.5-94.9) |
| Â | Under-fives, no fever(n = 1940) | 8.0(6.8-9.2) | 10.5(9.1-11.9) | 66.7(59.3-74.1) | 94.4(93.3-95.5) |
| Â | Above 5 years + fever (n = 96) | 40.9(31.1-50.7) | 41.9(32.0-51.8) | 89.5(79.8-99.2) | 90.9(83.3-98.5) |
| Â | Above 5 years, no fever (n = 3906) | 22.6(21.3-23.9) | 18.0(16.8-19.2) | 60.5(57.1-63.9) | 94.5(93.7-95.3) |
| Â | Overall (n = 5759) | 18.2(17.2-19.2) | 16.2(15.2-17.2) | 63.4(59.8-67.1) | 94.3(93.6-95.0) |