| | Total () | Nonsurgery group () | Surgery group () | value |
| | Age, median (range) (years) | 63 (48–85) | 64 (48–85) | 62 (50–76) | 0.695 | | Male sex, n (%) | 44 (63.8) | 38 (63.3) | 6 (66.7) | 1.000 | | Location (vertical), n (%) | | | | 0.888 | | Upper third | 16 (23.2) | 14 (23.3) | 2 (22.2) | | | Middle third | 38 (55.1) | 32 (53.3) | 6 (66.7) | | | Lower third | 15 (21.7) | 14 (23.3) | 1 (11.1) | | | Location (circumferential), n (%) | | | | 0.000 | | Anterior wall | 14 (18.8) | 7 (11.7) | 7 (77.8) | | | Posterior wall | 18 (26.1) | 18 (30.0) | 0 (0.0) | | | Lesser curvature | 24 (34.8) | 24 (40.0) | 0 (0.0) | | | Greater curvature | 13 (18.8) | 11 (18.3) | 2 (22.2) | | | Resected size, median (range) (cm) | 4.0 (0.7–14.0) | 4.0 (1.2–10.0) | 4.0 (0.7–14.0) | 0.748 | | Histologic type, n (%) | | | | 0.008 | | Adenoma | 36 (52.2) | 34 (56.7) | 2 (22.2) | | | Early gastric cancer | 20 (29.0) | 18 (30.0) | 2 (22.2) | | | Gastrointestinal stromal tumor | 7 (10.2) | 5 (8.3) | 2 (22.2) | | | Leiomyoma | 1 (1.4) | 1 (1.7) | 0 (0.0) | | | Schwannoma | 2 (2.9) | 0 (0.0) | 2 (22.2) | | | No residual tumor | 3 (4.3) | 2 (3.3) | 1 (11.1) | | | Endoscopic procedure, n (%) | | | | 0.594 | | EMR | 9 (13.0) | 9 (15.0) | 0 (0.0) | | | ESD | 60 (87.0) | 51 (85.0) | 9 (100) | | | Procedure time, median (range) (min) | 39 (6–215) | 38 (6–215) | 39 (8–109) | 0.803 | | En bloc resection, n (%) | 62 (89.9) | 53 (88.3) | 9 (100) | 0.582 | | Complete resection, n (%) | 53 (76.8) | 48 (80.0) | 5 (55.6) | 0.197 | | Perforation, n (%) | | | | 0.147 | | Macroperforation | 45 (65.2) | 37 (61.7) | 8 (88.9) | | | Microperforation | 24 (34.8) | 23 (38.3) | 1 (11.1) | | | Endoclip use, n (%) | 55 (79.7) | 46 (76.7) | 9 (100) | 0.187 | | Percutaneous needle aspiration, n (%) | 9 (13.0) | 7 (11.7) | 2 (22.2) | 0.333 | Size of the free air in the abdominal cavity,
median (range) (cm) | 2.6 (0.0–7.9) | 2.5 (0.0–7.9) | 4.1 (0.0–7.3) | 0.838 | | Abdominal pain score (NRS), median (range) | 4 (0–10) | 2.0 (0–10) | 6 (4–7) | 0.002 | | Postprocedure pain killer use, median (range) | 1 (0–7) | 0 (0–5) | 3 (1–7) | 0.000 | | WBC count, median (range) (mm3) | 10,820 (6,190–21,540) | 10,655 (6,190–19,140) | 10,870 (9,450–21,540) | 0.318 | | Body temperature, median (range) (°C) | 36.3 (36.0–38.2) | 36.3 (36.0–38.2) | 36.7 (36.0–38.2) | 0.149 | | Heart rate/min, median (range) | 78 (56–112) | 76 (56–112) | 84 (68–110) | 0.033 |
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