Table 3 Estimates of parasite threshold (τ) and the sensitivity(%) and specificity(%) with respective 95% Confidence intervals (95%CI).
Log parasite (parasite/μL) and 95%CI | Sensitivity (95%CI) | Specificity (95%CI) | |||||||
|---|---|---|---|---|---|---|---|---|---|
Age group | τ(exp(τ)) | lower | Upper | Est. | lower | Upper | Est. | lower | Upper |
Lowlands | |||||||||
0-1 yrs | 8.20 (3641) | 8.02(3041) | 8.64(5653) | 74.3 | 70.7 | 76.0 | 67.3 | 66.3 | 78.6 |
2-3 yrs | 8.66 (5756) | 8.53(5064) | 8.95(7708) | 74.1 | 71.4 | 74.8 | 76.9 | 73.1 | 81.1 |
4-5 yrs | 8.73 (6215) | 8.65(5710) | 9.39(11968) | 64.9 | 60.1 | 65.6 | 86.2 | 85.9 | 92.9 |
6-9 yrs | 8.13 (3405) | 7.87(2618) | 8.21(3678) | 69.1 | 69.1 | 69.8 | 90.4 | 88.3 | 91.1 |
10-19 yrs | 6.81 (903) | 6.68(796) | 7.03(1130) | 68.3 | 67.2 | 69.7 | 82.8 | 81.8 | 86.0 |
Highlands | |||||||||
0-1 yrs | 7.12 (1233) | 5.73(308) | 9.28(10721) | 67.1 | 50.6 | 78.5 | 66.7 | 50.0 | 93.3 |
2-3 yrs | 5.71 (302) | 4.57(97) | 6.01(407) | 91.9 | 90.4 | 95.6 | 53.2 | 29.8 | 59.6 |
4-5 yrs | 6.46 (640) | 6.44(626) | 6.77(871) | 84.0 | 84.0 | 84.0 | 72.7 | 71.2 | 80.3 |
6-9 yrs | 4.63 (102) | 3.95(52) | 4.72(112) | 96.9 | 96.9 | 99.1 | 37.2 | 16.7 | 37.2 |
10-19 yrs | 4.62 (101) | 4.54(94) | 4.90(134) | 91.9 | 90.3 | 91.9 | 47.2 | 47.2 | 61.8 |