Table 4.
Results of logistic binary regression analysis of combined LFT and US results (independent variable) and CBD stone (dependent variable)
| All patients |
Age <55 |
Age ≥55 |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| No | OR | P-value | No | OR | P-value | No | OR | P-value | |
| Normal liver enzymes + Normal CBD |
138 | 0.28 (0.146, 0.55) | <0.001 | 64 | NS | NS | 74 | 0.46 (0.23, 0.91) | 0.016 |
| Normal liver enzymes + Dilated CBD |
106 | 0.14(0.05, 0.39) | <0.001 | 50 | 0.25 (0.06, 1.04) | 0.02 | 56 | 0.10 (0.03, 0.43) | <0.001 |
| Isolated rise of liver enzymes + Normal CBD |
190 | 0.23(0.12, 0.42) | <0.001 | 86 | 0.43 (0.18, 1.04) | 0.04 | 104 | 0.1587(0.068, 0.37) | <0.001 |
| Isolated rise of liver enzymes + Dilated CBD |
90 | 1.17 (0.69, 1.98) | 0.545 | 40 | 1.75 (0.76, 4.03) | 0.208 | 50 | 0.9938 (0.51, 1.96) | 0.986 |
| Hyperbilirubinemia + Normal CBD |
346 | 1.52 (1.11, 2.08) | 0.01 | 120 | 1.23 (0.67, 2.28) | 0.502 | 226 | 1.54 (1.06, 2.24) | 0.025 |
| Hyperbilirubinemia + Dilated CBD |
152 | 5.12 (3.54, 7.41) | <0.001 | 48 | 6.85 (3.49, 13.43) | <0.001 | 104 | 4.31(2.77, 6.72) | <0.001 |
LFT: liver function tests; CBD: common bile duct; US: ultrasound; MRCP: magnetic resonance cholangiopancreatography; OR: odds ratio; Values in parentheses: 95% confidence intervals; NS: Not estimable