Table 4:

Frequency of sessions after which specific adverse effect occurred, and the mean intensity for specific adverse effects across all sessions defined as 0 = none, 1 = mild, 2 = moderate, 3 = severe.

Frequency by sessionsMean intensity (SD)
Sham group (n =20)Active group (n = 20)Sham groupActive groupSham groupp*
Headache620.60 (.94)0.20 (.62)0.120
Neck pain200.20 (.62)00.154
Scalp pain330.40 (.99)0.40 (1.05)1
Tingling880.80 (1.01)0.80 (1.01)1
Itching560.55 (1.00)0.75 (1.25)0.580
Burning sensation6130.7 (1.13)1.45 (1.19)0.048**
Skin redness11171.25 (1.25)1.95 (.94)0.053
Sleepiness961.00 (1.21)0.85 (1.42)0.722
Trouble concentrating130.10 (.45)0.40 (.99)0.226
Acute mood change00001
Others11.10 (.45).30 (.73)0.304
  • *p-value for independent samples t-test for group differences in adverse effect intensity.

  • **p < .05.