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Table 2 Characteristics of tumors in the two groups

From: Comparison of sedation between the endoscopy room and operation room during endoscopic submucosal dissection for neoplasms in the upper gastrointestinal tract

  Group E Group O P value
Size of tumors (mm) 17.3 ± 10.5 19.7 ± 17.0 0.14
Location of tumors    0.10
 Esophagus 0 (0%) 2 (2.0%)  
 Stomach 196 (100%) 99 (98.0%)  
 Upper third 28 (14.3%) 12 (11.9%)  
 Middle third 83 (42.3%) 52 (51.5%)  
 Lower third 85 (43.4%) 35 (34.7%)  
Number of tumors    0.07
 Single 185 (94.4%) 89 (88.1%)  
 Multiple 11 (5.6%) 12 (11.9%)  
Histological classification    0.65
 0-I 5 (2.6%) 4 (4.0%)  
 0-IIa 82 (41.8%) 38 (37.6%)  
 0-IIb 5 (2.6%) 6 (5.9%)  
 0-IIc 92 (46.9%) 48 (47.5%)  
 0-IIa + IIc 11 (5.6%) 5 (5.0%)  
 SMT 1 (0.5%) 0 (0%)  
Macroscopic classification    0.25
 Adenoma 55 (28.1%) 28 (27.7%)  
 Tub1 114 (58.1%) 58 (57.4%)  
 Tub2 18 (9.2%) 6 (5.9%)  
 por 1 (0.5%) 4 (4.0%)  
 Others 8 (4.1%) 5 (5.0%)  
Depth of invasion    0.97
 m 174 (88.8%) 91 (90.1%)  
 sm 22 (11.2%) 10 (9.9%)  
  1. Group E: patients who underwent endoscopic submucosal dissection in the endoscopy room, Group O: patients who underwent endoscopic submucosal dissection in the operation room. Values are presented as mean ± standard deviation or n (%)