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Mean and standard deviation of common bile duct diameter by age group
| Age Group (in completed years) | Number of Participants | Mean (mm) | Standard Deviation (mm) |
|---|---|---|---|
| 18-25 | 70 | 3.9 | 0.86 |
| 26-35 | 50 | 4.0 | 0.91 |
| 36-45 | 46 | 4.1 | 1.17 |
| 46-55 | 23 | 4.4 | 1.23 |
| >55 | 11 | 4.7 | 0.81 |
| Total | 200 | 4.1 | 1.01 |
