Table 3.
ADC cut-off value for distinguishuing between recurrence/progression risk groups determined on the basis of ROC curve analysis
| (Low/inter. recurrence risk) |
(Inter./high recurrence risk) |
(Low/inter. Progression risk) |
(Inter./high Progression risk) |
|
| Cut-off value | ≤1.365 | ≤1.024 | ≤1.252 | ≤0.955 |
| Sensitivity (%) | 100.0 ( 2/ 2) | 47.4 (18/38) | 83.3 ( 5/ 6) | 87.5 (14/16) |
| Specificity (%) | 97.4 (37/38) | 100.0 ( 1/ 1) | 81.3 (13/ 6) | 63.2 (12/19) |
| Positive response predictive value (%) | 66.7 ( 2/ 3) | 100.0 (18/18) | 62.5 ( 5/ 8) | 66.7 (14/21) |
| Negative response predictive value (%) | 100.0 (37/37) | 4.8 ( 1/21) | 92.9 (13/14) | 85.7 (12/14) |
| Accuracy (%) | 97.5 (39/40) | 48.7 (19/21) | 90.0 (18/20) | 74.3 (26/35) |