Table 3.
The area under the receiver operating characteristic (ROC) curves of the proposed detection ratio, using both the FFT and WT methods, for COP and its velocity in the ML and AP directions under the two conditions (eyes open (EO) and eyes closed (EC)). The p-values of each parameter are presented in parentheses. The asterisks (*) indicate that the area under the ROC curve was significantly different from 0.5 (p < 0.05).
| FFT | WT | ||||
|---|---|---|---|---|---|
| COP | V_COP | COP | V_COP | ||
| ML-Direction | EO | 0.689 (p = 0.05) |
0.779 * (p = 0.001) |
0.809 * (p = 0.001) |
0.823 * (p = 0.001) |
| EC | 0.602 (p = 0.343) |
0.712 * (p = 0.023) |
0.706 * (p = 0.033) |
0.726 * (p = 0.016) |
|
| AP-Direction | EO | 0.562 (p = 0.542) |
0.555 (p = 0.5873) |
0.562 (p = 0.529) |
0.569 (p = 0.482) |
| EC | 0.555 (p = 0.578) |
0.592 (p = 0.358) |
0.579 (0.442) |
0.595 (p = 0.363) |
|