Table 1 Demographic data from patients with chronic migraine (CM) and healthy controls (HCs) and the headache profile of the patients
From: Cerebral gray matter volume in patients with chronic migraine: correlations with clinical features
|  | 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 |