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Phase 2 participant characteristics
| Variable | Number of participants (%) | |
| Gender | Male | 6 (30.0) |
| Female | 9 (60.0) | |
| Age | ≤54 | 5 (33.3) |
| 55–64 | 5 (33.3) | |
| 65–74 | 3 (20.0) | |
| ≥75 | 2 (13.3) | |
| Procedure | OGD (including transnasal endoscopy) | 7 (46.7) |
| Colonoscopy | 7 (46.7) | |
| CTC | 1 (6.7) | |
| Education level | High school | 9 (60.0) |
| College | 4 (26.7) | |
| Higher education | 2 (13.3) | |
CTC, CT colonography; OGD, oesophagogastroduodenoscopy.
