Table 1.
Baseline characteristics of PCCRCs versus DCRCs.
| Features | PCCRCs (n = 122) | DCRCs (n = 98) | P value* |
|---|---|---|---|
| Mean age (SD) | 71.8 (9.1) | 69.4 (11.4) | 0.089 |
| Male (%) | 70 (57.4) | 57 (58.2) | 1.000 |
| Current/previous smoking (%) | 28 (23.0) | 21 (21.9) | 0.980 |
| Proximal location (%) | 77 (63.6) | 31 (31.6) | <0.001 |
| Flat appearance (%) | 58 (47.9) | 27 (27.8) | 0.004 |
| T1 carcinoma (%) | 21 (17.6) | 5 (5.1) | 0.009 |
| Poor differentiation (%) | 32 (29.6) | 12 (12.8) | 0.006 |
| Mucinous histology (%) | 17 (13.9) | 13 (13.3) | 1.000 |
| Diverticulosis (%) | 58 (47.5) | 20 (20.8) | <0.001 |
| Mean tumour size (SD) | 3.6 (1.8) | 4.6 (1.9) | <0.001 |
*P value < 0.05 considered significant.