Table 2.

Statistics in the Prediction.

Statistics	Radiomics model			Combined model
	Training set	Testing set	Cross-validation set	Training set	Testing set	Cross-validation set
ACC	0.822	0.871	0.740	0.822	0.903	0.822
AUC (95% CIs)	0.849 (0.755-0.931)	0.864 (0.683-0.996)	0.779 (0.655-0.878)	0.857 (0.761-0.935)	0.868 (0.689-1.000)	0.848 (0.735-0.930)
NPV	0.796	0.895	0.842	0.796	0.900	0.796
PPV	0.895	0.833	0.629	0.895	0.909	0.895
SEN	0.607	0.833	0.786	0.607	0.833	0.607
SPE	0.956	0.895	0.711	0.956	0.947	0.956

Data in parentheses are 95% CIs.

Abbreviations: ACC, accuracy; AUC, area under the curve; CI, confidence interval; NPV, negative predictive value; PPV, positive predictive value; SEN, sensitivity; SPE, specificity.