Table 2.
Summary of tumor characteristics by depth of invasion range and pT stage
| N (%) | Average tumor size (cm) | Average DOI (mm) | Ulcerated, N (%) | Exophytic, N (%) | Same slide measured, N (%) | ||
|---|---|---|---|---|---|---|---|
| DOI range | Uniform | 12 (7.2) | 1.68 | 4.75 | 8/12 (66.7) | 3/12 (25) | 4/12 (33.3) |
| 0.5 to < 5 mm | 124 (74.3) | 2.43 | 7.38 | 64/124 (51.6) | 13/124 (10.5) | 61/124 (49.2) | |
| 5 to < 10 mm | 25 (15.0) | 4.30 | 13.81 | 15/25 (60) | 0/25 (0) | 5/25 (20.0) | |
| ≥ 10 mm | 6 (3.6) | 5.02 | 17.46 | 4/6 (66.7) | 1/6 (16.7) | 0/6 (0) | |
| p-value | < 0.0001**** | < 0.0001**** | 0.7147* | 0.1213* | 0.0111* | ||
| pT | Same pT | 142 (85.0) | 2.66 | 8.31 | 74/142 (52.1) | 15/142 (10.6) | 66/142 (46.5) |
| Different pT | 25 (15.0) | 3.30 | 9.66 | 17/25 (68) | 2/25 (8) | 4/25 (16.0) | |
| p-value | 0.1004*** | 0.2659*** | 0.1914** | > 0.9999** | 0.0012** | ||
| All cases | 167 | 2.8 | 8.53 | 91/167(54.5) | 17/167 (10.2) | 69/167 (41.3) |
*p-value from Chi-square test for trend
**p-value from Fisher’s exact test
***p-value from unpaired t-test
****p-value from ANOVA, comparisons between pair ‘Uniform and 0.5 to < 5 mm’ and pair ‘5 to < 10 mm and ≥ 10 mm’ were not significant, comparisons between other pairs were significant