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| BLI-bright | BLI-contrast | P value1 | NBI | P value2 | |
| All | 31.3 | 24.7 | < 0.01 | 23.8 | < 0.01 |
| Pharynx | 36.7 | 36.7 | 1.00 | 36.7 | 1.00 |
| Esophagus | 31.9 | 25 | 0.13 | 22.5 | 0.06 |
| Stomach | 26.8 | 17.4 | 0.04 | 16.4 | 0.03 |
| Colorectum | 34.3 | 29.3 | 0.09 | 29.3 | 0.17 |
P value between BLI-bright vs. BLI-contrast.
P value between BLI-bright vs. NBI.
