Fig. 1
Consort diagram for OVERCOME (EU) migraine cohort. Consort diagram for OVERCOME (EU) 2021 migraine cohort (N = 20,756). aPhase I = creating a demographically representative sample of German/Spanish adults. bPhase II = identifying respondents with migraine. cPhase III = establishing the migraine cohort. dTargeted sampling to represent the German/Spanish adult population in terms of key demographic characteristics (age and sex) was applied. Abbreviations: ICHD-3, International Classification of Headache Disorders, 3rd edition; OVERCOME (EU), ObserVational survey of the Epidemiology, tReatment and Care Of MigrainE (Europe); SR-MD, self-reported medical diagnosis of migraine