Endoscopic retrograde cholangiopancreatography associated pancreatitis: A 15-year review

Table 4 Randomized controlled trials evaluating the effect of pancreatic duct stenting on prevention of post-ERCP pancreatitis

Author	Country	Year published	n	Rate of post-ERCP pancreatitis		P value
				Without stent (%)	With stent (%)
Tsuchiya[84]	Japan	2007	64	12.50	3.10	NRa
Sofuni[78]	Japan	2007	201	13.60	3.20	0.02
Harewood[77]	United States	2005	19	33.00	0.00	0.02
Fazel[85]	United States	2003	74	28.00	5.00	< 0.05
Tarnasky[18]	United States	1998	80	26.00	7.00	0.03
Smithline[87]	United States	1993	93	18.00	14.00	0.299

n: Patients included in final analysis;

^aNot reported.