Table 3.
ROC curve for PerAF differences in brain regions between BQD and HC groups.
| Brain region | Area under the curve | Sensitivity | Specificity | Cut off pointsa |
|---|---|---|---|---|
| R.ACC | 0.714 | 85% | 49% | 0.3701 |
| R.MFG | 0.773 | 94% | 54% | 1.1879 |
| R.Insula | 0.793 | 56% | 43% | 0.6892 |
| R.Precuneus | 0.713 | 60% | 71% | 1.0827 |
| L.Putamen | 0.792 | 69% | 83% | 0.5490 |
| L.SMG | 0.775 | 69% | 89% | 0.5740 |
| L.Cerebellum | 0.764 | 85% | 60% | 0.6910 |
| R.Orbitofrontal | 0.652 | 35% | 100% | 1.1335 |
| L.STG | 0.758 | 69% | 83% | 0.8504 |
ACC, anterior cingulate cortex; BQD, betel quid dependence; HC, healthy control; L, left; MFG, middle frontal gyrus; PerAF, percent amplitude of fluctuation; R, right; ROC, receiver operating characteristic; SMG, supramarginal gyrus.
STG, superiortemporal gyrus.
a
cut off point of mean PerAF signal value.