Table 2.

Incidence assay window periods obtained when combining BED and AI incidence assays for various pairs of cut-off values

BED - AI Cut-off	0.325 - 31.6	0.733 - 80.5	0.90 - 90.0	1.51 - 94.0	1.89 - 96.0
Window period	65.9 d	159 d	213 d	268 d	300 d
95% CI in days	45.3 to 93.5	122 to 211	163 to 264	211 to 352	234 to 388

d: days

AI: avidity index

CI: Confidence interval