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The diagnostic efficiency of activation pattern vs activated voxel numbers of POC.
| Groups | Normal olfactory | Olfactory dysfunction | Sensibility | Specificity | Positive predictive value | Negative predictive value | Youden index | |
| Activated voxel numbers | NC | 26/44 | 18/44 | 67.27% | 78.79% | 84.09% | 59.09% | 0.46 |
| AD | 7/44 | 37/44 | ||||||
| Activation pattern | NC | 31/44 | 13/44 | 75.47% | 88.57% | 90.91% | 70.45% | 0.64 |
| AC | 4/44 | 40/44 |
The cut off value of activated voxels to classify the normal and olfactory dysfunction was 68.
