TABLE 2.
Comparison of the Basic Characteristics and Tumor Features between the 2 Groups After PSM
| Observed Indicators | Group S N=75 | Group A N=75 | χ2/t | P |
|---|---|---|---|---|
| Sex, male n (%) | 42 (56.0) | 43 (57.3) | 0.027 | 0.869 |
| Age (y) | 61.83±10.45 | 62.31±13.11 | −0.248 | 0.804 |
| BMI(kg/m2) | 23.79±2.73 | 23.57±3.10 | 0.453 | 0.651 |
| History of smoking, n (%) | 21 (28.0) | 23 (30.7) | 0.129 | 0.720 |
| History of drinking, n (%) | 7 (9.3) | 16 (21.3) | 4.160 | 0.041 |
| Hypertension, n (%) | 30 (40.0) | 19 (25.3) | 3.667 | 0.055 |
| Diabetes, n (%) | 12 (16.0) | 6 (8.0) | 2.273 | 0.132 |
| cardiovascular disease, n (%) | 9 (12.0) | 7 (9.30) | 0.280 | 0.597 |
| Pathologic tumor size (cm) | 2.01±1.21 | 2.05±0.96 | −0.216 | 0.829 |
| Location, n (%) | 0.036 | 0.982 | ||
| Rectum | 36 (48.0) | 35 (46.7) | ||
| Left hemi-colon | 17 (22.7) | 17 (22.7) | ||
| Right hemi-colon | 22 (29.3) | 23 (30.7) | ||
| Morphology, n (%) | 0.284 | 0.867 | ||
| 0-I | 18 (24.0) | 16 (21.3) | ||
| 0-II/0-III | 46 (61.3) | 46 (61.3) | ||
| SMTs | 11 (14.7) | 13 (17.3) | ||
| Pathologic diagnosis, n (%) | 4.712 | 0.593 | ||
| Low-grade intraepithelial neoplasia | 33 (44.0) | 35 (46.7) | ||
| High-grade intraepithelial neoplasia | 18 (24.0) | 14 (18.7) | ||
| Intramucosal carcinoma | 1 (1.3) | 4 (5.30) | ||
| Submucosal carcinoma | 8 (10.7) | 5 (6.7) | ||
| Muscularis propria carcinoma | 1 (1.3) | 0 (0) | ||
| NETs | 9 (12.0) | 13 (17.3) | ||
| Others | 5 (6.7) | 4 (5.3) | ||
| Endoscopic resection of multiple lesions, n (%) | 29 (38.76) | 32 (42.7) | 0.249 | 0.618 |
0–I indicates the morphology of the tumor is polypoid; 0–II/0–III, the morphology of the tumor is nonpolypoid; BMI, body mass index; ESD, endoscopic submucosal dissection; group A, patients undergoing colorectal ESD under general anesthesia; group S, patients undergoing colorectal ESD under conscious sedation; NET, neuroendocrine tumor; PSM, propensity score matching; SMT, submucosal tumor.