Table 1.
Cut-off values for BED and AI incidence assays for predetermined incidence assay window periods
| Window period | 3 m (91.5 d) |
6 m (183 d) |
9 m (274 d) |
12 m (366 d) |
15 m (457 d) |
18 m (549 d) |
|---|---|---|---|---|---|---|
| BED Cut-off | 0.325 | 0.733 | 0.90 | 1.51 | 1.89 | 2.27 |
| 95% CI | 0.21 to 0.41 | 0.49 to 1.14 | 0.66 to 1.50 | 0.88 to 1.89 | 1.58 to 2.17 | 2.02 to 2.64 |
| AI Cut-off | 31.6 | 80.5 | 90.0 | 94.0 | 96.0 | NC |
| 95% CI | 20.6 to 37.0 | 42.9 to 90.1 | 84.0 to 94.0 | 90.0 to 97.5 | 94.0 to 99.7 |
m: months
d: days
AI: avidity index
NC: Not calculable
CI: Confidence interval