Variation in lesion size (mm) by clinical outcome with p values
| Outcome | Number | Median lesion size (mm) with 95% CI | Minimum (mm) | Maximum (mm) | p Value (comparison is between enclosed outcomes) |
|---|---|---|---|---|---|
| Hyperplastic polyps | 38 | 3 (3 to 5) | 1 | 16 | <0.0001 |
| All adenoma | 307 | 10 (10 to 11) | 1 | 85 | |
| High-risk adenoma | 189 | 14 (12 to 15) | 3 | 85 | <0.0001 |
| Low-risk adenoma | 118 | 6 (4 to 7) | 1 | 9 | |
| Adenoma histology | |||||
| Low-grade dysplasia | 250 | 10 (9 to 10) | 1 | 50 | <0.0001 |
| High-grade dysplasia | 56 | 14 (12 to 17) | 3 | 85 | |
| Non-villous | 127 | 7 (6 to 8) | 1 | 35 | <0.0001 |
| Villous | 154 | 13 (12 to 15) | 2 | 85 | |
| Adenoma site | |||||
| Proximal colon | 67 | 8 (6 to 10) | 1 | 85 | 0.007 |
| Distal colon | 240 | 10 (10 to 12) | 2 | 50 | |
| Cancer | 37 | 30 (25 to 35) | 7 | 90 | |
| Dukes’ stage | |||||
| A or B | 22 | 26 (25 to 34) | 7 | 55 | 0.16 |
| C or higher | 13 | 35 (26 to 42) | 22 | 50 | |
| Tumour site | |||||
| Proximal colon | 12 | 35 (31 to 46) | 25 | 55 | 0.03 |
| Distal colon | 25 | 26 (24 to 33) | 7 | 90 | |
| Cancer type | |||||
| Polyp | 5 | 18 (N/A) | 7 | 26 | 0.003 |
| Other | 27 | 35 (25 to 44) | 9 | 55 | |