Table 3.

Results of receiver operating characteristic (ROC) curve of mean diffusivity (MD) of the selected grey matter regions with calculation of cut-off values, area under the curve (AUC), accuracy, sensitivity, and specificity in differentiating patients and controls

Variable		ROI site	Cut-off value	AUC	Sens.	Spec.	PPV	NPV	Accuracy
MD	RT	Thalamus	0.73	0.978	97%	86.7%	94.1%	92.9%	93.8
		Globus pallidus	0.72	0.952	93.9%	93.3%	96.9%	87.5%	93.8%
		Hippocampal head	0.89	0.814	72.7%	86.7%	92.3%	59.1%	77.1%
	LT	Thalamus	0.83	0.411	39.4%	33.3%	56.5%	20%	37.5%
		Globus pallidus	0.75	0.413	42.4%	60%	70%	32.1%	47.9%
		Hippocampal head	0.85	0.44	54.5%	26.7%	62.1%	21.1%	45.8%