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Square weighted Cohen’s kappa coefficient (w2K) for the interrater agreement. The number of patients corresponding to the attributed score (−1, 0, 1) is indicated for each different observer (senior gastroenterologist vs computer science expert). The interobserver agreement was substantial: 87.36% (w2K: 0.6470).
| Computer science expert score | ||||
| Senior gastroenterologist score | −1 | 0 | 1 | Total |
| −1 | 62 | 17 | 5 | 84 |
| 0 | 22 | 40 | 16 | 78 |
| 1 | 11 | 13 | 75 | 99 |
| Total | 95 | 70 | 96 | 261 |
