Table 2:

ROC of CBV, corrected CBV, and K₂ in differentiating PCNSLs from glioblastomas^{^a}

Parameter	AUC	95% CI	P Value	CV	SEN	SPE	Accuracy
CBV ratio	0.984	0.952–1.000	<.001	1.88	100	86.7	94.2
Corrected CBV ratio	0.940	0.861–1.000	<.001	3.01	90	93.3	91.4
				2.08	100	46.7	77.1
K₂	0.788	0.624–0.953	.004	1.2	75	80.0	77.1

Note:—CI indicates confidence interval; CV, cutoff value; SEN, sensitivity; SPE, specificity; AUC, area under the curve; ROC, receiver operating characteristic curve analysis.
↵a Data of sensitivity, specificity, and accuracy are in percentages.