| Sex | Age(y) | National colonoscopy registry | National estimates of colorectal cancer occurrence | Annual transition in %‡ | ||
| Number screened | Advanced adenomas n (%) | Observed “incidence” * | Estimated onset† | |||
| Women | 55–59 | 112 399 | 3866 (3.4) | 82.1 | 104.3 | 2.6 |
| 60–64 | 160 880 | 6773 (4.2) | 113.0 | 161.3 | 3.3 | |
| 65–69 | 125 133 | 6005 (4.8) | 180.1 | 238.4 | 4.2 | |
| 70–74 | 55 582 | 3219 (5.8) | 261.0 | 326.2 | 4.8 | |
| 75–79 | 27 414 | 1785 (6.5) | 351.5 | 440.4 | 5.8 | |
| 80+ | 9492 | 691 (7.3) | 479.0 | 481.2 | 5.6 | |
| Men | 55–59 | 66 330 | 4130 (6.2) | 132.4 | 188.7 | 2.6 |
| 60–64 | 110 597 | 8312 (7.5) | 210.5 | 284.8 | 3.2 | |
| 65–69 | 97 411 | 8217 (8.4) | 313.6 | 405.7 | 4.1 | |
| 70–74 | 47 018 | 4336 (9.2) | 441.5 | 452.6 | 4.2 | |
| 75–79 | 21 220 | 2051 (9.7) | 456.9 | 512.9 | 4.5 | |
| 80+ | 6673 | 632 (9.5) | 551.4 | 564.7 | 5.1 | |
*Patients diagnosed with colorectal cancer within age group per 100 000 per year; †patients estimated to have onset of CRC within age group per 100 000 per year; ‡onset of colorectal cancers per 100 advanced adenomas.