Table 3 Comparison of intraoperative and postoperative clinicopathological characteristics between the two groups with tumor size < 2.5 cm.
Characteristics | Overall (n = 127) | Dual knife group (n = 70) | Injection mucosa knife group (n = 57) | P-value |
|---|---|---|---|---|
Total procedure time, mins, median (IQR) | 57 (50, 63) | 61 (57, 65) | 50 (44, 55) | < 0.001 |
Mucosal dissection time, mins, median (IQR) | 47 (40, 53) | 52 (47, 56) | 40 (34, 45) | < 0.001 |
Submucosal dissection rate, cm²/mins, median (IQR) | 0.07 (0.05, 0.09) | 0.06 (0.04, 0.07) | 0.09 (0.06, 0.10) | < 0.001 |
Severe intraoperative hemorrhage, n (%) | > 0.999 | |||
Yes | 6 (4.7%) | 3 (4.3%) | 3 (5.3%) | |
No | 121 (95.3%) | 67 (95.7%) | 54 (94.7%) | |
R0 resection, n (%) | 0.458 | |||
Yes | 120 (94.5%) | 65 (92.9%) | 55 (96.5%) | |
No | 7 (5.5%) | 5 (7.1%) | 2 (3.5%) | |
Postoperative bleeding, n (%) | > 0.999 | |||
Yes | 1 (0.8%) | 1 (1.4%) | 0 (0.0%) | |
No | 126 (99.2%) | 69 (98.6%) | 57 (100.0%) | |
Postoperative fever, n (%) | > 0.999 | |||
Yes | 5 (3.9%) | 3 (4.3%) | 2 (3.5%) | |
No | 122 (96.1%) | 67 (95.7%) | 55 (96.5%) | |
Postoperative pathology, n (%) | 0.936 | |||
LGIN | 69 (54.3%) | 39 (55.7%) | 30 (52.6%) | |
HGIN | 29 (22.8%) | 15 (21.4%) | 14 (24.6%) | |
Intramucosal carcinoma | 19 (15.0%) | 11 (15.7%) | 8 (14.0%) | |
Submucosal carcinoma | 10 (7.9%) | 5 (7.1%) | 5 (8.8%) | |
Postoperative hospital stay, days, median (IQR) | 3.0 (2.0, 4.0) | 3.0 (3.0, 4.0) | 3.0 (2.0, 3.0) | 0.034 |
