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. 2023 Jul 17;24(1):88. doi: 10.1186/s10194-023-01623-z

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© The Author(s) 2023, corrected publication 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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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, 3^rd edition; OVERCOME (EU), ObserVational survey of the Epidemiology, tReatment and Care Of MigrainE (Europe); SR-MD, self-reported medical diagnosis of migraine