Table 4 Comparison of intraoperative and postoperative clinicopathological characteristics between the two groups with tumor size ≥ 2.5 cm.
Characteristics | Overall (n = 102) | Dual knife group (n = 51) | Injection mucosa knife group (n = 51) | P-value |
|---|---|---|---|---|
Total procedure time, mins, median (IQR) | 61 (51, 70) | 70 (66, 77) | 51 (47, 55) | < 0.001 |
Mucosal dissection time, mins, median (IQR) | 53 (41, 61) | 60 (56, 64) | 41 (36, 47) | < 0.001 |
Submucosal dissection rate, cm²/mins, median (IQR) | 0.16 (0.12, 0.23) | 0.12 (0.10, 0.16) | 0.21 (0.17, 0.25) | < 0.001 |
Severe intraoperative hemorrhage, n (%) | 0.243 | |||
Yes | 3 (2.9%) | 3 (5.9%) | 0 (0.0%) | |
No | 99 (97.1%) | 48 (94.1%) | 51 (100.0%) | |
Intraoperative perforation, n (%) | > 0.999 | |||
Yes | 1 (1.0%) | 1 (2.0%) | 0 (0.0%) | |
No | 101 (99.0%) | 50 (98.0%) | 51 (100.0%) | |
R0 resection, n (%) | > 0.999 | |||
Yes | 93 (91.2%) | 47 (92.2%) | 46 (90.2%) | |
No | 9 (8.8%) | 4 (7.8%) | 5 (9.8%) | |
Postoperative bleeding, n (%) | > 0.999 | |||
Yes | 1 (1.0%) | 1 (2.0%) | 0 (0.0%) | |
No | 101 (99.0%) | 50 (98.0%) | 51 (100.0%) | |
Postoperative fever, n (%) | > 0.999 | |||
Yes | 4 (3.9%) | 2 (3.9%) | 2 (3.9%) | |
No | 98 (96.1%) | 49 (96.1%) | 49 (96.1%) | |
Postoperative pathology, n (%) | 0.948 | |||
LGIN | 44 (43.1%) | 22 (43.1%) | 22 (43.1%) | |
HGIN | 35 (34.3%) | 18 (35.3%) | 17 (33.3%) | |
Intramucosal carcinoma | 20 (19.6%) | 9 (17.6%) | 11 (21.6%) | |
Submucosal carcinoma | 3 (2.9%) | 2 (3.9%) | 1 (2.0%) | |
Postoperative hospital stay, days, median (IQR) | 3.0 (2.0, 3.0) | 3.0 (2.0, 4.0) | 3.0 (2.0, 3.0) | 0.878 |
