Table 3.
Concordance between each assay.
| DiaSorin Liaison® | bioMérieux Vidas® | Siemens Atellica® | Wantai | Abbott Architect | Roche Elecsys | BioRad Platelia | Epitope Diagnostics EDI™ | |
|---|---|---|---|---|---|---|---|---|
| DiaSorin Liaison® | 100 % | 80 % (80) | 82.5 % (80) | 72.7 % (77) | 78.05 % (82) | 80.5 % (82) | 81.5 % (81) | 74.7 % (79) |
| bioMérieux Vidas® | 80 % (80) | 100 % | 94.9 % (78) | 90.7 % (75) | 90 % (80) | 87.5 % (80) | 87.3 % (79) | 89.6 % (77) |
| Siemens Atellica® | 82.5 % (80) | 94.9 % (78) | 100 % | 85.3 % (75) | 86.1 % (79) | 87.3 % (79) | 82.5 % (80) | 84.2 % (76) |
| Wantai | 72.7 % (77) | 90.7 % (75) | 85.3 % (75) | 100 % | 90.9 % (77) | 87 % (77) | 89.5 % (76) | 93.5 % (77) |
| Abbott Architect | 78.05 % (82) | 90 % (80) | 86.1 % (79) | 90.9 % (77) | 100 % | 92.7 % (82) | 88.9 % (81) | 89.9 % (79) |
| Roche Elecsys | 80.5 % (82) | 87.5 % (80) | 87.3 % (79) | 87 % (77) | 92.7 % (82) | 100 % | 90.1 % (81) | 84.8 % (79) |
| BioRad Platelia | 81.5 % (81) | 87.3 % (79) | 82.5 % (80) | 89.5 % (76) | 88.9 % (81) | 90.1 % (81) | 100 % | 87.2 % (78) |
| Epitope Diagnostics EDI™ | 74.7 % (79) | 89.6 % (77) | 84.2 % (76) | 93.5 % (77) | 89.9 % (79) | 84.8 % (79) | 87.2 % (78) | 100 % |
We compared assays by pairs. Considering only the samples tested with both assays (N), we considered as concordant the samples for which antibodies were detected positive or detected negative by both assays; when one assay gave a positive value whereas the other gave a negative value, the sample result was considered as discordant between the assays. Concordance was expressed as a percentage of samples detected positive or negative by the two considered assays.
Data are repeated for horizontal or vertical reading.