| Benign (n = 34) | Malignant (n = 26) | Sensitivity | Specificity | PPV | NPV | Accuracy | ||
---|---|---|---|---|---|---|---|---|---|
No. | % | No. | % | ||||||
MRCP | |||||||||
 Benign | 30 | 88.2 | 3 | 11.5 | 88.46 | 88.24 | 85.19 | 90.91 | 88.33 |
 Malignant | 4 | 11.8 | 23 | 88.5 | |||||
 χ2 (p) | 35.017* (< 0.001*) |  |  |  |  |  | |||
DWI | |||||||||
 Benign | 34 | 100.0 | 2 | 7.7 | 92.31 | 100.0 | 100.0 | 94.44 | 96.67 |
 Malignant | 0 | 0.0 | 24 | 92.3 | |||||
 χ2 (p) | 52.308* (< 0.001*) |  |  |  |  |  | |||
Combined MRCP and DWI | |||||||||
 Benign | 34 | 100.0 | 1 | 3.8 | 96.15 | 100.0 | 100.0 | 97.14 | 98.33 |
 Malignant | 0 | 0.0 | 25 | 96.2 | |||||
 χ2 (p) | 56.044* (< 0.001*) |  |  |  |  |  |