Effect of endoscopic submucosal dissection on gastrointestinal function and nutritional status in patients with early gastric cancer

Table 2 Surgical conditions, mean ± SD

Group	Operation time (minute)	Intraoperative bleeding volume (mL)	Gastrointestinal ventilation time (hour)	Length of stay (day)
ESD group (n = 42)	62.83 ± 8.48	28.48 ± 5.28	25.85 ± 5.48	12.83 ± 4.28
EMR group (n = 38)	51.36 ± 7.15	22.52 ± 4.19	36.76 ± 7.15	13.28 ± 4.51
t value	6.504	5.553	7.701	0.458
P value	< 0.001	< 0.001	< 0.001	0.648

ESD: Endoscopic submucosal dissection; EMR: Endoscopic mucosal resection.