Final diagnosis (surgical specimen) | n | Sensitivity | Specificity | PPV | NPV | Accuracy | |
---|---|---|---|---|---|---|---|
PPV, positive predictive value; NPV, negative predictive value. | |||||||
*No separate statistical analysis because of the small number of cases. | |||||||
†Relates to all three IDUS diagnoses. | |||||||
ETP | Benign disease | 10 | |||||
Malignancies | 50 | 52 | 100 | 100 | 29 | 60 | |
IDUS | Pancreatic carcinoma | 30 | 90 | 83 | 84 | 89 | |
IDUS | Bile duct carcinoma | 17 | 88 | 86 | 71 | 95 | 83† |
IDUS | Gall bladder carcinoma | 3 | * | * | * | * | |
ETP+IDUS | 98 |