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Table 2 Baseline characteristics of episodic migraineurs randomized into tDCS and sham subgroups

From: Tracking tDCS induced grey matter changes in episodic migraine: a randomized controlled trial

  tDCS (N = 11) Sham (N = 13) p value
Age, years 41.0 ± 14.8 35.1 ± 9.7 0.251
Female Sex, no. (%) 10 (90.9) 13 (100) 0.458
Average number of migraine days during baseline period 4.7 ± 2.2 6.4 ± 2.7 0.118
Average migraine intensity during baseline period 6.3 ± 1.2 5.4 ± 1.8 0.199
Disease duration, years 22.0 ± 12.4 18.5 ± 11.6 0.546
Aura, no. (%) 7 (63.6) 8 (61.5) 1.000
Number of stimulation days 30.1 ± 2.9 28.8 ± 1.9 0.147
HADS-D score during baseline period 3.8 ± 2.2 4.1 ± 3.4 0.829
FUP1, days 48.7 ± 6.9 50.2 ± 8.5 0.644
FUP2, days 161.5 ± 52.5 174.2 ± 69.5 0.352
  1. FUP1 first follow-up; FUP2 second follow-up; HADS-D depression subscale of the Hospital Anxiety and Depression Scale; two-sided t-tests were applied for comparison of continuous variables; where the criterion of normal distribution was not met (FUP2, number of stimulation days), Wilcoxon rank-sum test was used; Fisher’s exact test was performed for comparison of sex and aura between tDCS and sham. Modified from Pohl et al. [32].