Table 4.

AUC of classifier module in test set and external validation set

Projects	Test set	External validation set
Sample size	352	186
Normal pancreas	210(59.66%)	94(50.54%)
Acute pancreatitis	140(40.34%)	92(49.46%)
AUC	0.993	0.850
Standard Errors	0.00496	0.0261
95% Confidence interval	0.978 to 0.999	0.790 to 0.898
z statistic	99.348	13.395
Significance level P (Area = 0.5)	< 0.0001	< 0.0001
Youden indx J	0.9859	0.6998
Sensitivity	100.00	80.85
Specificity	98.59	89.13