Table 5.
Cut-off value with sensitivity and specificity for VNT titer 80 and 160.
| Manufacturer | Titer 80 | Titer 160 | ||||||
|---|---|---|---|---|---|---|---|---|
| Cut-Off | Sensitivity | Specificity | AUC | Cut-Off | Sensitivity | Specificity | AUC | |
| Diasorin | 35.1 | 82% | 100% | 0.9341 | 73.2 | 64% | 96% | 0.8636 |
| Beckman Coulter | 2.39 | 49% | 100% | 0.8777 | 3.31 | 50% | 96% | 0.8435 |
| Euroimmun | 2.09 | 65% | 100% | 0.8806 | 3.06 | 55% | 96% | 0.8258 |
| Abbott | 4.26 | 35% | 100% | 0.8819 | 6.00 | 26% | 96% | 0.7168 |
| Roche | 68.4 | 59% | 94% | 0.8514 | 131.4 | 13% | 96% | 0.7111 |
Legend: The individual assays report the results as follows: Abbott as an index value (S/C); Diasorin as arbitrary units per milliliter (AU/mL); Roche as cut-off index (COI); Beckman Coulter as an index value (S/CO); Euroimmun as a ratio (number only); Cut-off is defined as the 95% percentile of the group below the titer 80 and 160; AUC, area under the curve.