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. 2022 Jan 26;2(1):e91. doi: 10.1002/deo2.91

TABLE 1.

Background characteristics of enrolled lesions

All C‐ESD P‐ESD
n = 70 n = 35 n = 35 p‐value
Tumor location 0.81
Upper or Middle 37 (53) 18 (51) 19 (54)
Lower 33 (47) 17 (49) 16 (46)
Tumor position 1
L or A or P 40 (57) 20 (57) 20 (57)
G 30 (43) 15 (43) 15 (43)
Estimated long axis diameter, mm 35 (35–40) 35 (32–40) 35 (35–40) 0.42
Estimated short axis diameter, mm 30 (25–35) 30 (25–32) 30 (25–35) 0.76
Estimated size (mm2) 824.3 (628–961.6) 824.3 (686.9–942) 824.3 (628–961.6) 0.73
Operator skill 0.81
0–49 cases of ESD 39 (56) 20 (57) 19 (54)
≥50 cases of ESD 31 (44) 15 (43) 16 (46)

Values are presented as median (interquartile range) or number (frequency [%])

Abbreviations: A, anterior wall; C‐ESD, conventional ESD; ESD, endoscopic submucosal dissection; G, greater curvature; L, lessor curvature; P, posterior wall; P‐ESD, ProKnife injection ESD.