Distribution of Primary Headaches by ICHD type in this study sample (n = 255)1.

1Patients may have one or more headache diagnoses. Totals represent the actual number of males and females included in the study. ICHD-International Classification of Headache Disorders version 2.2Percentage expressed as patients of the gender within total number of patients with the type of headache.3Percentage expressed as patients with the type of headache over total study population.4Percentage expressed as patients with subtype of migraine over total number of migraineurs.