Diagnostic accuracy of rTT as the seventh edition T-category modifier
| Variable | No Shrinkage Factor | With Shrinkage Factor 0.8 |
|---|---|---|
| rTT identifying 7th edition T1 tumor with pTT > 0.5 cm | ||
| Total case No. | 119 | 119 |
| True positive | 38 | 34 |
| True negative | 59 | 65 |
| False positive | 17 | 11 |
| False negative | 5 | 9 |
| Sensitivity | 88% (75–96) | 79% (64–90) |
| Specificity | 78% (67–86) | 86% (76–93) |
| Positive predictive value | 69% (55–81) | 76% (60–87) |
| Negative predictive value | 92% (83–97) | 88% (78–94) |
| Accuracy | 82% | 83% |
| rTT identifying 7th edition T2 tumor with pTT > 1.0 cm | ||
| Total case No. | 161 | 161 |
| True positive | 64 | 54 |
| True negative | 49 | 65 |
| False positive | 31 | 15 |
| False negative | 17 | 27 |
| Sensitivity | 79% (69–87) | 67% (55–77) |
| Specificity | 61% (50–72) | 81% (71–89) |
| Positive predictive value | 67% (57–77) | 78% (67–87) |
| Negative predictive value | 74% (62–84) | 71% (60–80) |
| Accuracy | 70% | 74% |