Table 2 Receiver operating characteristic (ROC) analysis of early enhancement parameters in diagnosing early-phase spinal tuberculosis
Variables | AUC | 95%CI | Sensitivity (%) | Specificity (%) | Cut-off value | Y-index | P | |
|---|---|---|---|---|---|---|---|---|
Efirst | 4 weeks | 0.82 | (0.68, 0.97) | 72.00 | 80.00 | ≥ 0.73 | 0.52 | 0.003 |
6 weeks | 0.76 | (0.58, 0.93) | 48.00 | 100.00 | ≥ 1.54 | 0.48 | 0.019 | |
8 weeks | 0.76 | (0.60, 0.92) | 48.00 | 100.00 | ≥ 2.02 | 0.48 | 0.019 | |
Vfirst | 4 weeks | 0.56 | (0.31, 0.81) | 84.00 | 50.00 | ≥ 0.64 | 0.34 | 0.596 |
6 weeks | 0.61 | (0.38, 0.83) | 76.00 | 60.00 | ≥ 1.15 | 0.36 | 0.333 | |
8 weeks | 0.62 | (0.39, 0.86) | 84.00 | 50.00 | ≥ 1.38 | 0.34 | 0.258 | |
Ee | 4 weeks | 0.75 | (0.59, 0.91) | 56.00 | 90.00 | ≥ 0.77 | 0.46 | 0.022 |
6 weeks | 0.77 | (0.58, 0.96) | 80.00 | 70.00 | ≥ 0.88 | 0.50 | 0.013 | |
8 weeks | 0.77 | (0.61, 0.93) | 72.00 | 80.00 | ≥ 1.15 | 0.52 | 0.014 | |
Ve | 4 weeks | 0.53 | (0.30, 0.76) | 36.00 | 80.00 | ≥ 1.05 | 0.16 | 0.784 |
6 weeks | 0.59 | (0.36, 0.82) | 84.00 | 50.00 | ≥ 1.01 | 0.34 | 0.411 | |
8 weeks | 0.59 | (0.34, 0.84) | 80.00 | 60.00 | ≥ 1.20 | 0.40 | 0.411 | |