κ values for the assessments of minimal changes in the distal oesophagus and the gastro-oesophageal junction
| Endoscopic features | κ value | |
|---|---|---|
| Excessive reddening of the cardia | 0.09 | (0.00–0.29) |
| Erythema of the squamocolumnar junction | 0 | (−0.08–0.06) |
| Friability of the squamocolumnar junction | 0.04 | (0.00–0.25) |
| Blurring of the squamocolumnar junction | 0.08 | (0.00–0.22) |
| Diffuse erythema of the distal oesophagus | 0.08 | (0.00–0.28) |
| Patchy erythema of the distal oesophagus | 0.00 | (−0.07–0.09) |
| Increased vascularity of the distal oesophagus | 0.00 | (0.00–0.09) |
| Oedema or accentuation of the mucosal folds | 0.00 | (−0.02–0.15) |
Median κ values are given, as well as the first and third quartile.