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Table 2 Characteristics and treatment outcomes of ESD between the two groups in S-Trainee

From: Ex vivo porcine model study on the treatment outcomes of scissor-type knife versus needle-type knife in endoscopic submucosal dissection performed by trainees

  ESD-S (n = 8) ESD-N (n = 8 P value
Tumor location (n)    
 Upper/middle/lower 0/4/4 0/3/5 1.0
 Anterior wall/posterior wall/lesser curvature/greater curvature 3/1/1/3 2/2/2/2 0.26
 Specimen size, mm (range) 37.5 (28–53) 33.5 (25–53) 0.52
Median procedure time, min (range)    
 Total 18.0 (9–27) 17.8 (7–31) 0.75
 Mucosal incision 12.0 (5.5–20) 13.0 (4.5–17) 0.79
 Submucosal dissection 6.5 (1.5–10) 4.8 (2.5–14) 0.29
 Self-completion, n (%) 8 (100%) 7 (87.5%) 0.12
 En-bloc resection, n (%) 8 (100%) 8 (100%) 1.0
 Complication, n (%) 0 (0%) 0 (0%) 1.0
 Perforation, n (%) 0 (0%) 0 (0%) 1.0
 Muscularis layer injury, n (%) 0 (0%) 0 (0%) 1.0
  1. P value was calculated using χ2 test or Fisher’s exact test for categorical data
  2. P value was calculated using Mann–Whitney U test for continuous data
  3. ESD endoscopic submucosal dissection, S-Trainee senior-trainee with the experience of over 1000 endoscopies, ESD-S endoscopic submucosal dissection with scissor-type knife, ESD-N endoscopic submucosal dissection with needle-type knife