Table 3.
Correlation of Common Bile Duct Size With Methadone Dose and Duration
| Common bile duct diameter (mm) | Mean duration of methadone use (months) | Average dose of methadone use (mg/day) |
|---|---|---|
| ≤4 (normal) | 23 | 100 |
| ≥8 (dilatation) | 33 | 110 |
| P-value | .01 | .83 |
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