| Total | Control (BMI*8 < 25 kg/m2) | Overweight (25 kg/m2 ≤ BMI < 30 kg/m2) | Obese (BMI ≥ 30 kg/m2) | P value |
---|---|---|---|---|---|
Lesion (n) | 327 | 251 | 64 | 12 | Â |
Procedure time (min, median [IQR*1]) | 40.0 (26.0–60.0) | 40.0 (25.0–59.0) | 47.0 (30.0–74.3) | 38.0 (30.8–63.0) | 0.150 |
Longer procedure time (≥ 90 min) (n) | 44 (13.5%) | 27 (10.8%) | 14 (21.9%) | 3 (25.0%) | 0.033 |
Specimen size (mm, min, median [IQR]) | 30.0 (24.5–38.0) | 30.0 (24.0–37.0) | 30.0 (25.8–40.0) | 29.5 (23.5–36.0) | 0.456 |
Lesion size (mm mean ± SD) | 22.0 (19.0–29.0) | 22.0 (18.5–28.0) | 24.5 (19.8–32.0) | 20.0 (16.0–29.0) | 0.274 |
Fibrosis (n) | Â | 0.942 | |||
 F0 | 277 (84.7%) | 214 (85.3%) | 53 (82.8%) | 10 (83.3%) |  |
 F1 | 33 (10.1%) | 24 (9.6%) | 8 (12.5%) | 1 (8.3%) |  |
 F2 | 17 (5.2%) | 13 (5.2%) | 3 (4.7%) | 1 (8.3%) |  |
Self-completion (n) | 279 (85.3%) | 218 (86.0%) | 51 (79.7%) | 10 (83.3%) | 0.345 |
En bloc resection (n) | 326 (99.7%) | 251 (100%) | 63 (98.4%) | 12 (100.0%) | 0.127 |
Complete resection (n) | 322 (98.5%) | 249 (99.2%) | 61 (95.3%) | 12 (100.0%) | 0.070 |
Curative resection (n) | 317 (96.9%) | 245 (97.6%) | 60 (93.8%) | 12 (100.0%) | 0.228 |
Vertical margin positivity (n) | 4 (1.2%) | 2 (0.8%) | 2 (3.1%) | 0 (0.0%) | 0.295 |
Horizontal margin positivity (n) | 1 (0.3%) | 0 (0.0%) | 1 (1.6%) | 0 (0.0%) | 0.127 |
Tumor budding (n) | Â | 0.862 | |||
 Grade 1 | 29 (8.9%) | 21 (8.4%) | 6 (9.4%) | 2 (16.7%) |  |
 Grade 2, 3 | 1 (0.3%) | 1 (0.4%) | 0 (0.0%) | 0 (0.0%) |  |
Patients (n) | 288 | 221 | 56 | 11 | Â |
Change of vital signs during ESD (n) | |||||
 SBP fluctuation*2 | 77 (26.7%) | 57 (25.8%) | 17 (30.4%) | 3 (27.3%) | 0.788 |
 Bradycardia*3 | 21 (7.3%) | 16 (7.2%) | 5 (8.9%) | 0 (0.0%) | 0.580 |
 Hypoxemia*4 | 110 (38.2%) | 77 (34.8%) | 27 (48.2%) | 6 (54.5%) | 0.096 |
Amount of flunitrazepam (mg/kg, median [IQR]*4) | 1.73 × 10−2 (1.27 × 10−2–2.26 × 10−2) | 1.77 × 10−2 (1.32 × 10−2–2.29 × 10−2) | 1.55 × 10−2 (1.17 × 10−2–2.23 × 10−2) | 1.33 × 10−2 (1.21 × 10−2–1.98 × 10−2) | 0.197 |
Amount of pethidine (mg/kg, median [IQR]) | 0.58 (0.51–0.66) | 0.61 (0.54–0.69) | 0.49 (0.47–0.56) | 0.38 (0.33–0.46) |  < 0.001 |
Delayed bleeding (n) | 6 (2.1%) | 6 (2.7%) | 0 (0.0%) | 0 (0.0%) | 0.395 |
Perforation (n) | 3 (1.0%) | 2 (0.9%) | 1 (1.8%) | 0 (0.0%) | 0.796 |
PECS*5 (n) | 3 (1.0%) | 1 (0.5%) | 2 (3.6%) | 0 (0.0%) | 0.114 |
Delayed event*6 (n) | |||||
 Pulmonary embolism | 1 (0.3%) | 0 (0.0%) | 1 (1.8%) | 0 (0.0%) | 0.125 |
 Sick sinus syndrome | 1 (0.3%) | 0 (0.0%) | 1 (1.8%) | 0 (0.0%) | 0.125 |
Hospitalization*7 (days, median [IQR]) | 5.0 (5.0–5.0) | 5.0 (5.0–5.0) | 5.0 (5.0–5.0) | 5.0 (5.0–5.0) | 0.721 |