Table 3. Sensitivity and specificity at different cutoff values.
The cutoff values are expressed in Reader Units (RUs). Sensitivity and specificity values are reported in %, with the 95% confidence intervals are reported in brackets. Ov = O. volvulus, Wb = W. bancrofti, Mp = M. perstans, Ss = S. stercoralis, EN = Endemic Normals, NEN = Non-Endemic Normals.
| Cutoff | Visual | 100 RUs | 200 RUs | 400 RUs | 600 RUs |
|---|---|---|---|---|---|
| Sensitivity Loa (%) | 94 (88–97) | 88 (81–93) | 84 (76–90) | 80 (71–86) | 71 (62–78) |
| Specificity Ov (%) | 82 (73–88) | 83 (74–89) | 89 (10–94) | 94 (87–97) | 96 (90–98) |
| Specificity Wb (%) | 87 (75–94) | 84 (71–92) | 90 (78–96) | 98 (89–100) | 100 (93–100) |
| Specificity Mp (%) | 88 (64–98) | 88 (64–98) | 94 (72–100) | 100 (91–100) | 100 (91–100) |
| Specificity Ss (%) | 100 (91–100) | 100 (91–100) | 100 (91–100) | 100 (91–100) | 100 (91–100) |
| Specificity EN and NEN (%) | 100 (95–100) | 100 (95–100) | 100 (95–100) | 100 (95–100) | 100 (95–100) |