Patient risk group
| Patient group | Risk | SC N (%) | EAC N (%) | Two-sided P value |
| All patients | No adenoma | 564 (63.8%) | 525 (59.1%) | 0.03 |
| Low | 205 (23.2%) | 225 (25.3%) | ||
| Intermediate | 87 (9.8%) | 95 (10.7%) | ||
| High | 28 (3.2%) | 43 (4.8%) | ||
| Non-BCSP | No adenoma | 366 (76.1%) | 374 (75.7%) | 0.78 |
| Low | 93 (19.3%) | 89 (18.0%) | ||
| Intermediate | 18 (3.7%) | 25 (5.1%) | ||
| High | 4 (0.8%) | 6 (1.2%) | ||
| BCSP | No adenoma | 198 (49.1%) | 151 (38.3%) | 0.004 |
| Low | 112 (27.8%) | 136 (34.5%) | ||
| Intermediate | 69 (17.1%) | 70 (17.8%) | ||
| High | 24 (6.0%) | 37 (9.4%) |
BCSP, Bowel Cancer Screening Programme; EAC, EV-assisted colonoscopy; SC, standard colonoscopy.