Table 2.
Agreements between avidity tests results and estimated date of infection after redistribution of sera with values in the gray zone and belonging to group CI > 4 TBC.
Redistribution of sera | Groups | Architect avidity |
Vidas avidity |
||||||
---|---|---|---|---|---|---|---|---|---|
High | Low | Kappa coefficient | Number of discrepant results with the estimated date of infection | High | Low | Kappa coefficient | Number of discrepant results with the estimated date of infection | ||
Exclusion of sera in gray zone avidity and in group CI > 4 TBC | Group AI < 4 | 0 | 17 | 0.660 | 12 | 0 | 16 | 0.805 | 6 |
Group CI > 4 | 63 | 12 | 76 | 6 | |||||
Gray zone avidity in high avidity sera and group CI > 4 TBC in CI > 4 group | Group AI < 4 | 0 | 17 | 0.538 | 20 | 1 | 16 | 0.668 | 12 |
Group CI > 4 bis: CI > 4 TBC + CI > 4 | 80 | 20 | 89 | 11 | |||||
Gray zone avidity in high avidity sera and group CI > 4 TBC in group AI < 4 | Group AI < 4 bis: CI > 4 TBC + AI < 4 | 1 | 25 | 0.721 | 13 | 5 | 21 | 0.712 | 11 |
Group CI > 4 | 79 | 12 | 85 | 6 | |||||
Gray zone avidity in low avidity sera and group CI > 4 TBC in group AI < 4 | Group AI < 4 bis: CI > 4 TBC + AI < 4 | 0 | 26 | 0.500 | 28 | 0 | 26 | 0.693 | 15 |
Group CI > 4 | 63 | 28 | 76 | 15 |
Notes. In the first redistribution (exclusion of samples in gray zone avidity and samples belonging to group CI > 4 TBC), 25 and 19 sera for Architect and Vidas avidity assays were excluded, respectively. In bold, the three best CKC obtained depending the exclusion/redistribution of sera.
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