Table 5.

Performance of the ternary classifiers

Dataset	Plain scan	Arterial phase	Venous phase	χ2 value	P value
Accuracy	0.820568	0.790633	0.788076	1.074	0.585
Specificity	0.985721	0.984770	0.990305	0.577	0.749
Sensitivity (cancer at the tail/body of pancreas)	0.520122	0.411098	0.360272	1.841	0.398
Sensitivity (cancer at the head/neck of pancreas)	0.462148	0.852390	0.728743	16.651	< 0.001