Table 5.

Diagnostic performance of the radiomic signatures and the nomogram for the prediction of NAC sensitivity

	Training set (n = 107)						Validation set (n = 45)
	Accuracy	Sensitivity	Specificity	PPV	NPV	AUC(95% CI)	Accuracy	Sensitivity	Specificity	PPV	NPV	AUC(95% CI)
Radiomics signature	0.822	0.933	0.779	0.622	0.968	0.91 (0.85–0.96)	0.818	1	0.75	0.6	1	0.91 (0.82–1.00)
Radiomics nomogram	0.822	0.933	0.779	0.622	0.968	0.91 (0.85–0.96)	0.818	1.000	0.750	0.600	1.000	0.93 (0.86–1.00)

CI, confidence interval; PPV, positive prediction value; NPV, negative prediction value