Table 2 Summary of inter‐agreement kappa values for comparison of pathologists in the analysis of oesophageal biopsies.
| Calculated kappa | 95% CI | Strength of agreement | |
|---|---|---|---|
| Cancer (Vienna 5) | 0.76 | 0.74–0.79 | Good |
| High grade dysplasia (Vienna 4) | 0.66 | 0.61–0.70 | Good |
| Low grade dysplasia (Vienna 3) | 0.22 | 0.19–0.24 | Fair |
| Indefinite for dysplasia (Vienna 2) | −0.02 | −0.04–0.00 | None |
| BO without dysplasia (Vienna 1) | 0.61 | 0.53–0.69 | Good |
| Total | 0.68 | 0.61–0.74 | Good |
95% CI, 95% confidence interval; BO, Barrett's oesophagus.