From: The efficacy of repetitive transcranial magnetic stimulation in treating patients with chronic daily headache
Control group
Headache index
Headache frequency
Pre-treatment
Post treatment
Mean ± S.D
61.64 ± 24.422
52.18 ± 18.819
23.09 ± 7.148
21.45 ± 6.729
Range
30–90
26–90
15–30
13–30
P value
> 0.05