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

Table 4 Gastrointestinal hormones, mean ± SD (µg/L)

Group	PG I		PG II
	Pre	Post	Pre	Post
ESD group (n = 42)	65.82 ± 6.89	82.48 ± 6.48a	25.04 ± 2.48	15.28 ± 3.15a
EMR group (n = 38)	66.27 ± 7.15	73.89 ± 6.35a	24.76 ± 2.51	18.96 ± 3.37a
t value	0.287	5.978	0.501	5.048
P value	0.775	< 0.001	0.618	< 0.001

^aP < 0.05 compared with that in the same group before operation.

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