Table 2.

Characteristics of randomized comparisons of endoscopic sphincterotomy and non-endoscopic sphincterotomy groups n (%)

Ref.	Group	Successful stent insertion	Pancreatitis	Bleeding	Acute cholangitis	Stent occlusion	Stentmigration	Duodenal perforation
Giorgio et al[10]	EST	92 (95.8)	2 (2.2)	3 (3.3)	NR	1 (1.1)	3 (3.3)	NR
	Non-EST	90 (93.7)	2 (2.2)	0 (0)		2 (2.2)	3 (3.3)
Artifon et al[11]	EST	37 (100)	0 (0)	5 (13.5)	NR	3 (8.1)	6 (16.2)	4 (10.8)
	Non-EST	37 (100)	0 (0)	0 (0)		3 (8.1)	1 (2.7)	0 (0)
Zhou et al[12]	EST	41 (100)	4 (9.8)	NR	24 (58.5)	5 (12.2)	NR	NR
	Non-EST	41 (100)	13 (31.7)		13 (31.7)	4 (9.8)

NR: Not reported; EST: Endoscopic sphincterotomy.