Table 2.

Classification accuracies in percent for social anxiety disorder (SAD), healthy controls (HC), and balanced accuracy of support vector machine analyses separation of SAD from HC based on regional gray matter volume imaging.

	SAD	P (SAD)a	HC	P (HC)a	Balanced accuracy	P (Balanced)a	AUCb
Whole brain	85.7	0.002	83.3	0.001	84.5	0.001	0.91
Fear network (amygdala, ACCc, hippocampus, insula)	50.0	0.466	50.0	0.238	50.0	0.397	0.39
Parietal lobe	64.3	0.268	50.0	0.394	57.1	0.232	0.51

Significant accuracies in bold print, as determined by permutation testing.

^aP-values are calculated from permutation testing with 1000 permutations.

^bArea under the receiver operating characteristic curve.

^cAnterior cingulate cortex.