Table 5. Univariate and multivariate analyses for identification of independent risk factors for PEP.

Variables	Univariate			Multivariate
	Odds ratio	95 % CI	P value	Odds ratio	95 % CI	P value
Female	1.548	0.416 – 5.763	0.515
Naive papilla	1.171	0.332 – 4.127	0.806
Difficult cannulation (> 8 attempt)	0.890	0.241 – 3.281	0.861
Pancreatography (> 3 times)	1.343	0.382 – 4.723	0.646
Pancreatic acinarization	1.382	0.334 – 5.718	0.656
Therapeutic biliary balloon dilation	0.941	0.186 – 4.760	0.942
Ampullectomy	1.383	0.151 – 12.690	0.774
Placement of pancreatic stent	0.819	0.163 – 4.112	0.808	1.042	0.191 – 5.684	0.962
Sphincterotomy	1.576	0.301 – 8.264	0.591	2.533	0.404 – 15.884	0.321
Flurbiprofen axetil	0.217	0.044 – 1.063	0.059	0.185	0.036 – 0.967	0.046