Table 1 Interobserver agreement of PZ and TZ of PI-RARDS-v2
From: Interobserver agreement of Prostate Imaging–Reporting and Data System (PI-RADS–v2)
PIRADS-v2 | Observer 1 | Observer 2 | K | 95 % CI | P value | Percent agreement |
|---|---|---|---|---|---|---|
Peripheral zone | N = 46 | N = 46 | ||||
PI-RADS score II | 5 (10.9) | 5 (10.9) | 0.78 | 0.47–1.0 | 0.001 | 83.9% |
PI-RADS score III | 6 (13.0) | 8 (17.4) | 0.66 | 0.35–0.98 | 0.001 | 91.3% |
PI-RADS score IV | 6 (13.0) | 5 (10.9) | 0.69 | 0.35–1.0 | 0.001 | 93.5% |
PI-RADS score V | 29 (63.0) | 28 (60.9) | 0.91 | 0.79–1.0 | 0.001 | 95.7% |
Transitional zone | N = 25 | N = 25 | ||||
PI-RADS score I | 7 (28.0) | 6 (24.0) | 0.89 | 0.69–1.0 | 0.001 | 96.0% |
PI-RADS score II | 1 (4.0) | 2 (8.0) | 0.65 | 0.02–1.0 | 0.001 | 96.0% |
PI-RADS score III | 5 (20.0) | 6 (24.0) | 0.65 | 0.28–1.0 | 0.001 | 88.0% |
PI-RADS score IV | 3 (12.0) | 4 (16.0) | 0.83 | 0.52–1.0 | 0.001 | 96.0% |
PI-RADS score V | 9 (36.0) | 7 (28.0) | 0.82 | 0.57–1.0 | 0.001 | 92.0% |
Overall | 71 | 71 | 0.81 | 0.69-0.93 | 0.001 | 94.9% |