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Rates of advanced neoplasia (absolute number/person years of follow up) on follow-up surveillance colonoscopy, per 1000 person years
| Age at next colonoscopy | Moderate risk (groups 1-3) | Amsterdam citeria (group 4) |
|---|---|---|
|
No advanced neoplasia on first colonoscopy
|
|
|
| 20-34 | 0.0 (0/462) | 3.6 (2/561) |
| 35-44 | 1.2 (2/1646) | 5.0 (4/803) |
| 45-64 | 2.3 (7/3045) | 6.7 (9/1351) |
| 65+ | 4.0 (2/500) | 19.7 (2/101) |
|
Advanced neoplasia on first colonoscopy
|
|
|
| All ages | 27.6 (4/144.8) | 56.5 (7/124.0) |
