Table 2. Comparisons between F0/F1 and F2 groups (n = 58).
| Degree of fibrosis determined by ESD | P value | ||
| F0/F1 | F2 | ||
| Gender: male/female | 25/24 | 6/3 | 0.95 |
| Mean age: years (range) | 70.8 (43 – 88) | 69.8 (58 – 79) | 0.61 |
| Location: C/A/T/D/S/R | 5/7/12/2/12/11 | 2/2/2/0/2/1 | 0.53 |
| Pathology: adenoma/carcinoma | 25/24 | 5/4 | 0.49 |
| Tumor size: mm (range) | 34.9 (13 – 75) | 20.1 (10 – 30) | 0.002 |
| Procedure duration: min | 110.0 ± 65.3 | 137.7 ± 60.3 | 0.26 |
| Procedure time per unit area1 | 3.3 ± 1.6 | 7.3 ± 2.8 | < 0.001 |
| Perforation | 0 | 1 | – |
Values are means ± SD.
C, cecum; A, ascending colon; T, transverse colon; D, descending colon; S, sigmoid colon; R, rectum.
1
Procedure time per unit area: procedure time (min)/tumor size (mm).