Univariable and multivariable analysis of risk factors for post-endoscopic retrograde cholangiopancreatography pancreatitis in the included patients, logistic regression analysis
| Univariable analysis | B | SE | Wald χ2 | OR (95% CI) | P value |
| Female | −1.169 | 0.624 | 3.503 | 0.31 (0.91 to 1.05) | 0.061 |
| Prior cholecystectomy | 0.934 | 0.424 | 4.850 | 2.54 (1.10 to 5.84) | 0.028 |
| History of pancreatitis | 1.291 | 0.497 | 6.747 | 3.63 (1.37 to 9.63) | 0.009 |
| Difficult cannulation | 1.167 | 0.425 | 7.553 | 3.12 (1.39 to 7.39) | 0.006 |
| Volume of contrast media | −0.060 | 0.021 | 8.021 | 0.94 (0.90 to 0.98) | 0.005 |
| Biliary sphincterotomy | −0.826 | 0.435 | 3.604 | 0.43 (0.18 to 1.02) | 0.058 |
| Pancreatic sphincterotomy | 2.359 | 0.535 | 19.415 | 10.58 (3.70 to 30.22) | <0.001 |
| Pancreatic duct guidewire insertion | 2.190 | 0.462 | 22.510 | 8.93 (3.61 to 22.07) | <0.001 |
| Pancreatography | 2.240 | 0.499 | 20.145 | 9.39 (3.53 to 24.99) | <0.001 |
| Number of cannulation attempts by professor | 0.153 | 0.044 | 11.983 | 1.16 (1.06 to 1.27) | 0.001 |
| Time of cannulation attempts by professor | 0.076 | 0.032 | 5.483 | 1.07 (1.01 to 1.15) | 0.019 |
| High risk patients | 1.278 | 0.555 | 5.307 | 3.59 (1.21 to 10.65) | 0.021 |
| Multivariable analysis | |||||
| Prior cholecystectomy | 0.926 | 0.437 | 4.48 | 2.52 (1.07 to 5.94) | 0.034 |
| Pancreatic duct guidewire insertion | 2.186 | 0.464 | 22.19 | 4.38 (1.44 to 13.29) | <0.001 |