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Distribution of Common Bile Duct Size Within the Study and Control Groups
| Common bile duct diameter (mm) | ≤4 (normal) | 5–7 (borderline) | ≥8 (dilatation) |
|---|---|---|---|
| Study group, N (%) | 119 (55.3%) | 40 (18.6%) | 56 (26.1%) |
| Control group, N (%) | 97 (89.8%) | 8 (7.4%) | 3 (2.8%) |
| P-value | <.0001 | <.0001 | <.0001 |
