| Variable | Sedated group (n=43) | Unsedated group (n=27) | Difference (P value) |
|---|---|---|---|
| Gender (male:female) | 20:23 | 12:15 | 0.87 |
| Mean age (yr) | 77.5±5.0 | 77.4±4.8 | 0.99 |
| Mean weight (kg) | 54.8±7.6 | 57.6±10.3 | 0.19 |
| Smoking status | |||
| Current smoking | 2 | 0 | 0.63 |
| Smoked in past | 14 | 6 | |
| Never smoked | 27 | 21 | |
| Hypertension | 23 | 14 | 0.90 |
| Diabetes mellitus | 9 | 8 | 0.43 |
| Chronic renal disease | 3 | 1 | 0.55 |
| Pulmonary disease | 7 | 4 | 0.87 |
| Cardiovascular disease | 8 | 2 | 0.16 |
| Cerebral vascular accident | 2 | 4 | 0.19 |
| Previous pancreatitis | 1 | 2 | 0.37 |
| Previous ERCP | 4 | 0 | 0.11 |
| Cholecystectomy | 11 | 5 | 0.49 |
| Antiplatelet agent | 15 | 6 | 0.25 |