Table 3: Univariate and multivariate analysis of factors affecting ESD procedure time.

UnivariateMultivariate

Age 0.171 0.50
Gender (male) 0.173 0.10
Tumor size <0.001 0.001
Tumor location (rectum)
  Cecum 0.015 0.18
 Right colon 0.363
 Left colon 0.880
Macroscopic type
 LST-NG 0.24
 LST-G 0.27
 Others 0.456
Histology
 Adenocarcinoma 0.005 0.06
 Adenoma 0.065 0.12
Non lifting sign 0.719

ESD: endoscopic submucosal dissection; LST-NG: laterally spreading tumors-nongranular type; LST-G: laterally spreading tumors-granular type.