Table 3.
Occurrence of choledocholithiasis.
| Predictors | Number of patients | Common bile duct stones | Percentage |
|---|---|---|---|
| Very strong predictors | |||
| Common bile duct stone on ultrasound | 43 | 38 | 88% |
| Clinical ascending cholangitis | 23 | 19 | 82% |
| Total bilirubin > 4 mg/dL | 167 | 120 | 72% |
| Strong predictors | |||
| Dilated common bile duct on ultrasound | 260 | 171 | 65% |
| Total bilirubin 1.8–4 mg/dL | 172 | 93 | 54% |
| Moderate predictors | |||
| Abnormal liver function tests | 499 | 286 | 57% |
| Age > 55 years old | 86 | 54 | 63% |
| Gallstone pancreatitis | 134 | 64 | 48% |
CBD, common bile duct; US, ultrasound; LFT, liver function test.