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Comparison between three frequency averages (LFG, HFG and EHFG) and standard deviation (SD) in the control group
| Groups | LFG | HFG | EHFG | F value |
|---|---|---|---|---|
| Control group | ||||
| Mean | 16.00 | 15.00 | 17.66 | 2.13 |
| SD | 0.86 | 0.50 | 1.75 | |
| Study group | ||||
| Mean | 29.50 | 22.72 | 41.22 | 44.49*** |
| SD | 3.22 | 3.40 | 3.27 |
SD standard deviation, LFG low frequency average group, HFG high frequency average group, EHFG extended high frequency average group
* P < 0.05, ** P < 0.01, *** P < 0.001
