Agreement Between 2 Observers on Different Disease Stages of PCa
| Scale | All patients | Stage of PCa | ||
| Staging (n = 129) | BCR (n = 67) | mCRPC (n = 23) | ||
| 3-category | ||||
| Unweighted Cohen κ | 0.83 (0.79–0.86) | 0.82 (0.74–0.85) | 0.70 (0.48–0.78) | 1.00 |
| Linear weighted Cohen κ | 0.90 (0.87–0.91) | 0.89 (0.83–0.97) | 0.79 (0.63–0.89) | 1.00 |
| Dichotomous | ||||
| ppos | 0.94 (0.90–0.98) | 0.94 (0.87–0.99) | 0.86 (0.67–1.00) | 1.00 |
| pneg | 0.97 (0.95–0.99) | 0.97 (0.95–0.99) | 0.97 (0.94–1.00) | 1.00 |
| Cohen κ | 0.91 (0.86–0.97) | 0.91 (0.83–0.99) | 0.83 (0.65–1.00) | 1.00 |
BCR = biochemical recurrence; mCRPC = metastatic castration-resistant PCa.
Data in parentheses are 95% confidence intervals.