Table 2:

ROC results of the percentiles with the best AUC for glioma grading

Parameter	AUC^{^a}	Sensitivity (%)^{^b}	Specificity (%)^{^b}	Cutoff Value^{^c}	P Value
K^trans
C98	0.912 (0.742–0.985)	76.19 (16/21)	100 (7/7)	0.277	<.01
Ve
C90	0.939 (0.779–0.994)	85.71 (18/21)	100 (7/7)	19.70	<.01
Vp
C84	0.769 (0.572–0.906)	61.9 (13/21)	100 (7/7)	11.71	<.01

↵a Data in parentheses are 95% confidence intervals.
↵b Sensitivity and specificity for identifying high-grade tumors. Data in parentheses are the numbers used to calculate the percentages.
↵c Data for K^trans are in units of minute⁻¹, and data for Ve and Vp are percentages.