Randomized controlled trial of pancreatic stenting to prevent pancreatitis after endoscopic retrograde cholangiopancreatography

Table 1 Patient characteristics

	Non-stent	Stent	P value
No. of patients	60	60	-
Mean age (range) (yr)	68 (27-92)	66 (24-88)	0.35
Sex: female/male	25/35	27/33	0.46
Reasons of high risk
Previous post-ERCP pancreatitis	5 (8%)	5 (8%)	0.65
Sphincter of Oddi dysfunction	0 (0%)	0 (0%)	-
A difficult cannulation	10 (17%)	10 (17%)	0.68
Pre-cut	0 (0%)	0 (0%)	-
Pancreatic sphincterotomy	5 (8%)	4 (7%)	1
Pancreatic duct biopsy	5 (8%)	6 (10%)	1
IDUS for pancreatic duct	27 (45%)	25 (42%)	0.15
Procedure time greater than 30 min	29 (48%)	33 (55%)	0.50

ERCP: Endoscopic retrograde cholangiopancreatography; IDUS: Intraductal ultrasonography.