Table 3.
Agreement between elevated ALP or bilirubin levels, pancreatitis, cholecystitis and findings of common bile duct stones on intraoperative cholangiography
| Predictor | Total | No CBDS | CBDS | PPV/NPV |
|---|---|---|---|---|
| ALP and bilirubin | ||||
| Normal ALP and bilirubin | 958 | 898 | 60 | 94% (NPV) |
| Elevated ALP and bilirubin | 159 | 93 | 66 | 42% (PPV) |
| Specificity | 91% | |||
| Sensitivity | 52% | |||
| Total agreement | 86% | |||
| Pancreatitis | ||||
| No pancreatitis | 987 | 887 | 100 | 90% (NPV) |
| Pancreatitis | 130 | 104 | 26 | 20% (PPV) |
| Specificity | 90% | |||
| Sensitivity | 21% | |||
| Total agreement | 82% | |||
| Cholecystitis | ||||
| No cholecystitis | 794 | 696 | 98 | 88% (NPV) |
| Cholecystitis | 323 | 295 | 28 | 9% (PPV) |
| Specificity | 70% | |||
| Sensitivity | 22% | |||
| Total agreement | 65% | |||
| Total, n | 1117 | 991 | 126 | |
PPV, positive predictive value; NPV, negative predictive value; ALP, alkaline phosphatase; CBDS, common bile duct stones