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Table 3 Matching factors and treatment outcomes after 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 = 51
P value
Matching factors    
Mean age, yers (SD) 73.2 (9.6) 72.8 (10.0) 0.872
Sex (male) 62.7 (32) 56.9 (29) 0.687
Median specimen size, mm (IQR) 38.0 (32.0–45.0) 35.0 (30.0–40.0) 0.059
Lesion location (Upper third) 21.6 (11) 17.6 (9) 0.804
Lesion position (Greater curvature) 25.5 (13) 19.6 (10) 0.636
Presence of ulcer findings 15.7 (8) 7.8 (4) 0.357
Treatment outcomes    
Median procedure time, min (IQR) 40.0 (27.0–81.5) 69.0 (46.5–113.5) 0.008
Median dissection speed, mm2/min (IQR) 21.8 (13.9–32.9) 11.8 (7.6–16.0)  < 0.001
En bloc resection 100 (51) 100 (51) NA
Complete resection 100 (51) 96.1 (49) 0.495
Post-ESD bleeding 2.0 (1) 5.9 (3) 0.617
Perforation 0 (0) 0 (0) NA
  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, NA not applicable
  3. P < 0.05