Agreement between four class categorisation of the real proportion of pink squares in the grid and that estimated by all histopathologists (consultants and trainees) for the 100 × 100 square grid
| Real (%) | ||||
|---|---|---|---|---|
| 0–25% | 26–50% | 51–75% | 76–100% | |
| κ Statistic 0.66 (95% confidence interval, 0.59 to 0.74). | ||||
| Estimated (%) | ||||
| 0–25% | 57 | 4 | 0 | 0 |
| 26–50% | 9 | 32 | 0 | 0 |
| 51–75% | 0 | 19 | 37 | 8 |
| 76–100% | 0 | 0 | 18 | 47 |