Table 2.

Risk for post-endoscopic retrograde cholangiopancreatography pancreatitis by multivariate analysis (n= 740 procedures)

Factor	R	P-value	95% CI
First EBD	3.44	0.0006	1.98 ∼ 12.16
Diagnostic examination, n	2.98	0.003	1.56 ∼ 8.63
Female	2.47	0.013	1.23 ∼ 5.90
Benign pancreatic tumour other than pancreatic cancer	2.15	0.032	1.13 ∼ 15.46
Non-neoplastic pancreaticobiliary diseasea	1.82	0.069	0.93 ∼ 7.88

^aNon-neoplastic pancreaticobiliary disease except for 73 cases of biliary stone

95% CI, 95% confidence interval; EBD, endoscopic biliary drainage