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Table 1 Baseline characteristics before propensity score matching

From: Internal traction method using a spring-and-loop with clip (S–O clip) allows countertraction in gastric endoscopic submucosal dissection

  SLC-ESD
n = 51
C-ESD
n = 89
P value
Mean age, years (SD) 73.2 (9.6) 73.6 (9.3) 0.802
Sex (male) 62.7 (32) 69.7 (62) 0.456
Median lesion size, mm (IQR) 15.0 (8.5–21.5) 12.0 (8.0–18.0) 0.07
Lesion location    0.223
 Upper 19.6 (10) 10.1 (9)
 Middle 41.2 (21) 40.5 (36)
 Lower 39.2 (20) 49.4 (44)
Lesion position    0.614
 Greater curvature 25.5 (13) 18.0 (16)
 Lesser curvature 33.3 (17) 30.3 (27)
 Anterior wall 19.6 (10) 27.0 (24)
 Posterior wall 21.6 (11) 24.7 (22)
Morphology    0.681
 Depressed 68.6 (35) 60.7 (54)
 Flat 27.5 (14) 33.7 (30)
 Protruded 3.9 (2) 5.6 (5)
  1. Values are % (n) unless otherwise indicated
  2. SLC-ESD spring-and-loop with clip-assisted endoscopic submucosal dissection, C-ESD conventional endoscopic submucosal dissection, SD standard deviation, IQR interquartile range