Table 2 Comparison of the results of occlusion cholangiogram and ENBD saline injection ultrasound
Occlusion cholangiogram | ENBD Injection ultrasound | p-value | ||
|---|---|---|---|---|
Common bile duct | Length (mm) | 53.4 ± 1.50 | 62.62 ± 1.17 | < 0.001 |
Diameter (mm) | 10.63 ± 0.474 | 10.36 ± 0.369 | 0.601 | |
True positive individual | 26 | 46 | < 0.001 | |
True negative individual | 246 | 247 | 0.689 | |
False positive individual | 5 | 4 | 0.689 | |
False negative individual | 25 | 5 | < 0.001 | |
Specificity | 98.0% | 98.4% | 0.689 | |
Sensitivity | 50.9% | 90.1% | < 0.001 | |
False positive rate | 2.0% | 1.6% | 0.689 | |
False negative rate | 49.1% | 9.9% | < 0.001 | |
Estimated accuracy | 90.1% | 96.4% | < 0.001 |