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Mean visual analogue scale (VAS) scores of the different treatment groups.
| Treatment group | Baseline VAS |
Improvement (%) | VAS at 1 week after treatment |
ΔVAS (beginning of treatment vs 1 week after treatment) |
| tDCSa | 7.2 | 18 | 5.904 | 1.296 |
| Combined therapy | 7.3 | 40 | 4.4019 | 2.8981 |
| Exercise therapy | 6.8 | 24 | 5.202 | 1.598 |
atDCS: transcranial direct current stimulation.
