Per-polyp analysis: mean number of adenomas per colonoscopy (APC) and univariate Poisson regression analysis by polyp characteristics among study participants (n=660); (for definitions, see text)
| Per-polyp analysis | CADe | Control | Incidence rate ratio (95% CI) |
| APC (SD) | APC (SD) | ||
| All neoplastic lesions | 1.26 (1.82) | 1.04 (1.75) | 1.21 (1.05 to 1.40) |
| Morphology* | |||
| Polypoid | 0.92 (1.54) | 0.84 (1.69) | 1.10 (0.94 to 1.29) |
| Non-polypoid | 0.34 (0.92) | 0.20 (0.63) | 1.66 (1.23 to 2.25) |
| Size | |||
| <10 mm | 1.15 (1.68) | 0.94 (1.76) | 1.23 (1.06 to 1.43) |
| >10 mm | 0.11 (0.36) | 0.11 (0.39) | 1.06 (0.67 to 1.69) |
| Location† | |||
| Proximal colon | 0.78 (1.24) | 0.71 (1.34) | 1.10 (0.92 to 1.32) |
| Distal colon | 0.48 (0.91) | 0.33 (0.76) | 1.44 (1.28 to 1.84) |
*Polypoid lesions, elevated more than 2.5 mm above the mucosal layer: pedunculated (0–1 p), sessile (0–1 s) or mixed (0-1 sp); non-polypoid lesions: superficial slightly elevated (IIa), flat (IIb), superficial depressed (IIc) and excavated (III) types.
†Proximal colon, cecum, ascending and transverse; distal colon, descending, sigmoid and rectum.