Table 4.

Factors associated with all the complications: multivariate analyses

Factors(n)	Multivariate analysis (OR, 95%CI, P)
Tumor site
Esophagus (67)	1(reference)
Stomach(68)	1.993 (0.761–5.222), 0.16
Layer of origin
MM(53)	1(reference)
SM(82)	2.383 (0.566–10.04), 0.237
Endoscopic procedure
MBM(60)	1(reference)
ESD(39)	13.161 (2.529–68.502), 0.002
ESE(36)	7.542 (1.071–53.169), 0.043
Tumor size
Tumor < 15 mm(70)	1(reference)
15 mm ≤ Tumor < 30 mm(65)	1.162 (0.424–3.182), 0.07
Piecemeal resection vs En bloc resection
Piecemeal resection	1(reference)
En bloc resection	0.114 (0.017–0.748), 0.024