Risk of death from colorectal cancer according to number of screening rounds for subjects who refused screening and for subjects who adhered to the screening programme, respectively
| Screening round | Subjects screened | Relative risk after screening rounds | Subjects refusing screening at this or subsequent rounds | Relative risk* |
|---|---|---|---|---|
| *Relative to subjects accepting all screening rounds. | ||||
| 1 | 20 672 | 0.70 (0.58–0.85) | 16 110 | 1.65 (1.30–2.08) |
| 2 | 18 781 | 0.69 (0.57–0.84) | 6060 | 1.34 (0.94–1.99) |
| 3 | 17 279 | 0.66 (0.54–0.81) | 4744 | 1.36 (0.88–2.11) |
| 4 | 15 845 | 0.67 (0.55–0.82) | 3799 | 0.97 (0.53–1.77) |
| 5 | 14 203 | 0.67 (0.55–0.82) | 2912 | 1.31 (0.68–2.53) |
| 6 | 12 533 | 0.67 (0.53–0.81) | 1860 | 1.82 (0.78–4.18) |
| 7 | 11 058 | 0.66 (0.54–0.81) | 820 | No events |