Table 4.

ESD-related abdominal pain and bleeding after ESD

	8-week group N = 23		1-week group N = 22		P-value*
Patients with pain, N (%)
Within 1 week	2	(8.6)	1	(4.5)	0.581
	0	(0)	0	(0)	1.000
After 4–8 weeks	0	(0)	0	(0)	1.000
Bleeding, N (%)
Bleeding†	2	(8.6)	1	(4.5)	0.581
Melena, hematemesis or anemia	0	(0)	0	(0)	1.000

*Mann–Whitney U test.

^†Bleeding observed by endoscopy at 1 day after ESD.