Table 2.

Performance of logistic regression classification of diagnostic group

CBF feature	Mean ± SD
	AUC	Accuracy
Mean grey matter CBF	0.62 ± 0.13*	0.60 ± 0.11*
Quantitative CBF principal components	0.60 ± 0.12*	0.61 ± 0.10*
Relative CBF principal components	0.56 ± 0.12*	0.52 ± 0.10

AUC = area under the receiver operating characteristic curve; CBF = cerebral blood flow; SD = standard deviation.

^*Indicates the 95% confidence interval does not contain 0.50.