TABLE 2.
Frequency of endorsement (%) of side effects during stimulation naïve first sessions of active (Sessions = 51) and sham (Sessions = 50) HD-tDCS from 101 participants
| None | Mild | Moderate | Severe | χ2 | df | p | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Active | Sham | Active | Sham | Active | Sham | Active | Sham | ||||
| Headache | 98 | 94 | 2 | 6 | 0 | 0 | 0 | 0 | 1.083 | 1 | .362 |
| Neck Pain | 98 | 98 | 2 | 0 | 0 | 2 | 0 | 0 | 2.000 | 2 | .999 |
| Scalp Pain | 82 | 94 | 10 | 4 | 6 | 2 | 2 | 0 | 3.557 | 3 | .271 |
| Tingling | 41 | 44 | 45 | 42 | 12 | 10 | 2 | 4 | 0.529 | 3 | .954 |
| Itching | 76 | 80 | 16 | 20 | 8 | 0 | 0 | 0 | 4.225 | 2 | .154 |
| Burning | 49 | 50 | 33 | 34 | 18 | 12 | 0 | 4 | 2.590 | 3 | .531 |
| Skin Redness | 100 | 94 | 0 | 6 | 0 | 0 | 0 | 0 | 3.154 | 1 | .118 |
| Sleepiness | 86 | 88 | 8 | 12 | 6 | 0 | 0 | 0 | 3.390 | 2 | .249 |
| Concentration Changes |
88 | 90 | 8 | 8 | 4 | 2 | 0 | 0 | 0.323 | 2 | .999 |
| Mood Changes | 98 | 96 | 2 | 2 | 0 | 2 | 0 | 0 | 1.031 | 2 | .745 |
| Other Symptom | 84 | 83 | 12 | 17 | 4 | 0 | 0 | 0 | 2.288 | 2 | .457 |