Incidence and recurrence rates of colorectal neoplasia—advanced lesions
| No of subjects | Advanced lesion | Mean time (y) | Annual incidence rate (%/year) | Hazard ratio | 95% CI | p Value | |
|---|---|---|---|---|---|---|---|
| *Age groups were classified according to age at the second colonoscopy. | |||||||
| Total | 6225 | 90 | 3.44 | 0.42 | |||
| Sex | |||||||
| Female | 1566 | 19 | 3.02 | 0.40 | 1 | ||
| Male | 4659 | 71 | 3.59 | 0.42 | 0.9 | 0.5–1.5 | 0.9 |
| Age (y)* | |||||||
| <40 | 806 | 3 | 3.56 | 0.10 | 1 | ||
| 40–49 | 2738 | 29 | 3.61 | 0.29 | 2.3 | 0.7–7.6 | 0.17 |
| 50–59 | 1975 | 36 | 3.24 | 0.56 | 3.6 | 1.1–12 | 0.04 |
| ⩾60 | 706 | 22 | 3.22 | 0.97 | 5.5 | 1.6–19 | <0.01 |
| Initial lesion | |||||||
| None | 4084 | 30 | 3.45 | 0.21 | 1 | ||
| Small adenoma | 1818 | 40 | 3.46 | 0.64 | 2.6 | 1.6–4.2 | <0.001 |
| Advanced lesion | 323 | 20 | 3.29 | 1.88 | 6.6 | 3.7–12 | <0.001 |