Clinical usefulness and current problems of pancreatic duct stenting for preventing post-ERCP pancreatitis

Table 1 Frequency of post-endoscopic retrograde cholangiopancreatography pancreatitis n(%)

Ref.	No. ofpatients	Post-ERCP pancreatitis	Surgery	Death
Freeman et al[1], 1996	2347	127 (5.4)	3	1
Loperfido et al[2], 1998	2769	36 (1.3)	2	1
Masci et al[3], 2001	2444	44 (1.8)	-	0
Freeman et al[4],2001	1963	131 (6.7)	1	1
Cheng et al[5], 2006	1115	168 (15.1)	-	1
Wang et al[6], 2009	2691	116 (4.3)	0	0
Sakai et al[7], 2013	720	14 (1.9)	0	0
Total	14049	636 (4.5)	6 (0.04)	4 (0.03)

ERCP: Endoscopic retrograde cholangiopancreatography pancreatitis.