Skip to main content
. 2017 Dec 8;18(1):115. doi: 10.1186/s10194-017-0825-z

Table 1.

Demographic data from patients with chronic migraine (CM) and healthy controls (HCs) and the headache profile of the patients

HCs (n = 20) Patients with CM (n = 20)
Women (n) 13 14
Age (years) 28.5 ± 4.1 31.3 ± 10.2
Disease duration (years) 15.0 ± 13.1
Days with headache/month (n) 23.0 ± 6.8
Severity of headache attacks (0–10) 7.6 ± 1.6
Duration of the chronic headache (months) 17.1 ± 29.3
Tablet intake/month (n) 2.8 ± 3.1

Data are expressed as the mean ± the standard deviation