Table 3.

Summary statistics of the number of migraine days per week in the three brain stimulation conditions at baseline, week 1, and week 2.

	Baseline	Week 1	Week 2
Sham	4.00 ± 0.44	5.06 ± 0.41	4.56 ± 0.51
Prefrontal	4.06 ± 0.53	3.11 ± 0.51	3.56 ± 0.52
Occipital	4.89 ± 0.52	3.17 ± 0.55	3.44 ± 0.56

Data are represented as mean ± standard error.