Table 2.
Classification performance without feature selection.
| Feature Set | sens. (%) | spec. (%) | accu. (%) | AUC | (sens+spec)/2 (%) |
|---|---|---|---|---|---|
| Demo | 70.9 ± 2.4 | 46.2 ± 1.8 | 59.6 ± 1.6 | 0.65 ± 0.02 | 58.5 ± 1.6 |
| FV | 67.7 ± 3.0 | 51.6 ± 2.7 | 60.3 ± 2.1 | 0.62 ± 0.02 | 59.6 ± 2.1 |
| fALFF1 | 63.5 ± 3.1 | 51.9 ± 2.4 | 58.2 ± 2.3 | 0.60 ± 0.02 | 57.7 ± 2.3 |
| fALFF2 | 64.2 ± 2.5 | 39.7 ± 3.2 | 53.0 ± 1.7 | 0.52 ± 0.02 | 52.0 ± 1.8 |
| GM | 63.3 ± 1.8 | 46.7 ± 3.8 | 55.7 ± 1.8 | 0.56 ± 0.02 | 55.0 ± 2.0 |
| WM | 56.9 ± 2.5 | 47.7 ± 2.6 | 52.7 ± 2.1 | 0.51 ± 0.02 | 52.3 ± 2.1 |
| CSF | 56.4 ± 2.8 | 39.6 ± 3.4 | 48.7 ± 2.7 | 0.49 ± 0.03 | 48.0 ± 2.8 |
| FV+Demo | 68.2 ± 3.3 | 54.5 ± 2.4 | 62.0 ± 2.3 | 0.64 ± 0.02 | 61.4 ± 2.2 |
| fALFF1+Demo | 62.5 ± 2.5 | 52.4 ± 2.7 | 57.9 ± 2.0 | 0.62 ± 0.02 | 57.4 ± 2.0 |
| fALFF2+Demo | 62.3 ± 2.6 | 44.1 ± 3.6 | 54.0 ± 2.4 | 0.58 ± 0.02 | 53.2 ± 2.5 |
| GM+Demo | 62.8 ± 2.4 | 51.7 ± 2.1 | 57.7 ± 1.6 | 0.61 ± 0.01 | 57.3 ± 1.6 |
| WM+Demo | 58.3 ± 2.2 | 50.2 ± 2.5 | 54.6 ± 1.9 | 0.55 ± 0.02 | 54.2 ± 1.9 |
| CSF+Demo | 62.1 ± 3.0 | 49.2 ± 2.8 | 56.2 ± 2.2 | 0.56 ± 0.02 | 55.6 ± 2.2 |
Demo is short for demographic variables; FV is short for functional volume; fALFF1/fALFF2 is short for regional mean fALFF1/fALFF2; GM/WM/CSF is short for GM/WM/CSF volume; X+Demo is short for the combination of X feature set and demographic variables. The best sens., spec., accu., AUC and (sens+spec)/2 are marked by bold.