Table 6.

ROC analysis for differentiating the PHN and HC groups

Brain region	AUC	Cutoff point	Sensitivity (%)	Specificity (%)	95% CI
					Upper bound	Lower bound
L CPL	0.113	0.993	0.071	0.273	0.023	0.202
R Parahippocampus	0.081	0.755	0.107	0.091	0.000	0.167
R lentiform nucleus	0.218	0.787	0.179	0.192	0.075	0.360
L insula	0.890	0.718	0.75	0.909	0.801	0.978
R MFG	0.885	0.6745	0.786	0.955	0.789	0.981
R insula	0.938	0.637	0.75	0.955	0.876	0.999
L precentral gyrus	0.847	0.439	0.75	0.864	0.739	0.956
R precentral gyrus	0.942	0.266	0.929	0.864	0.875	1.000
L postcentral gyrus	0.881	0.706	0.714	0.909	0.789	0.974

Abbreviations: AUC, area under the curve; CPL, cerebellar posterior lobe; HC, healthy control; L, left; MFG, middle frontal gyrus; PHN, postherpetic neuralgia; R, right; ROC, receiver operating characteristic.