Table 4.

ROC analysis of the various parameters (units × 10⁻³ mm²/s except where shown) indicating the sensitivity and specificity measures at the respective cut-off values and their significance levels

Parameter	AUC	Cut-off value (×10−3mm2/s)	Sensitivity (%)	Specificity (%)	p value
ADC (×10−3mm2/s)	0.749	1.012	81	67	0.01*
DDC (×10−3mm2/s)	0.756	1.141	81	72	0.01*
D t (×10−3mm2/s)	0.641	0.967	71	53	0.15
α (unit-less)	0.644	0.838	60	47	0.14
ƒ (%)	0.637	11.01	66	43	0.16

Values show statistical significance of the pretreatment mono-exponential (ADC), bi-exponential (D _t, ƒ) and stretched-exponential (DDC, α) parameters

AUC area under the curve