| Calprotectin | TNFi trough serum levels | Power Doppler score |
---|---|---|---|
Cut-off level to predict relapse | ≥ 3.7 μg/mL | < 1.61 μg/mL | ≥ 4 |
Area under the curve | 1.000 (1.000–1.000) | 0.790 (0.691–0.889) | 0.877 (0.772–0.981) |
Sensitivity | 100% | 68.7% | 75.0% |
Specificity | 98.8% | 83.3% | 89.2% |
Positive likelihood ratio | 83.0 | 4.12 | 6.92 |
Negative likelihood ratio | 0.00 | 0.37 | 0.28 |
Correctly classified | 98.9% | 70.5% | 87.4% |
Youden index | 0.99 | 0.51 | 0.64 |