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Study population.
| Characteristic | Participants of screening colonoscopy | Colorectal cancer patients from clinical setting |
|---|---|---|
| Total (N) | 516 | 50 |
| Men (N (%)) | 287 (56%) | 30 (60%) |
| Mean age (range) (years) | 63 (50–79) | 66 (51–78) |
| Most advanced finding (N) | ||
| Colorectal cancer | 16 | 50 |
| - Proximal only | 2 | 20 |
| - Distal only | 13 | 30 |
| - Missing | 1 | 0 |
| Advanced adenoma | 200 | 0 |
| - Proximal only | 49 | 0 |
| - Distal only | 98 | 0 |
| - Proximal and distal | 53 | 0 |
| Nonadvanced adenoma | 63 | 0 |
| Hyperplastic polyp | 33 | 0 |
| No finding at colonoscopy | 204 | 0 |
