TABLE 3.

The performance metrics of external validation.

Model	ML methods	AUC	Accuracy	Sensitivity	Specificity	NPV	PPV	Precision	Recall
DWI + CSFFLAIR	Bayes	0.84	0.77	0.87	0.78	0.87	0.78	0.87	0.75
DWI + CSFDWI	RF	0.83	0.81	0.81	0.74	0.81	0.75	0.81	0.72
P-value		0.879	0.483	0.811	0.872	0.823	0.848	0.771	0.763

DWI, diffusion weighted imaging; FLAIR, fluid attenuated inversion recovery; AUC, area under curve; NPV, negative predictive value; PPV, positive predictive value.