Table 4.
Prevalence of advanced colorectal neoplasia by risk tier and risk score
| Score | Subjects, n (%) | Subjects with ACN, n (%) | Risk tier | Proportion of individuals with ACN | 95% CI | Relative risk (95% CI) |
|---|---|---|---|---|---|---|
| 0 | 585 | 9 (1.5) | Low risk | |||
| 1 | 53 | 1 (1.9) | 0–3 | 3.0% | 2.6–3.5 | Reference |
| 2 | 3789 | 122 (3.2) | (158/5267) | |||
| 3 | 840 | 26 (3.1) | ||||
| 4 | 7495 | 395 (5.3) | Moderate risk | 7.1% | ||
| 5 | 2690 | 198 (7.4) | 4–6 | (1129/15888) | 6.7–7.5 | 2.47 (2.09–2.93) |
| 6 | 5703 | 536 (9.4) | ||||
| 7 | 3147 | 345 (11.0) | High risk | |||
| 8 | 3092 | 424 (13.7) | 7–11 | 12.4% | ||
| 9 | 1373 | 168 (12.2) | (1037/8349) | 11.7–13.1 | 4.59 (3.86–5.44) | |
| 10 | 646 | 85 (13.2) | ||||
| 11 | 91 | 15 (16.5) | ||||
| Total | 29,504 | 2324 (7.9) |