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Table 1 Summary of sampling and data collection methods in each country [adapted from reference [12]

From: Poor medical care for people with migraine in Europe – evidence from the Eurolight study

Country Denominator (n) Responders (n) Responder proportion (%) Gender (% female) Target population and mode of distribution of questionnaire
Studies with a general-population basis
Germany 3000 338 11.3 57 Random general-population sample from urban and rural areas, contacted by regular post
Italy 3500 500 14.3 58 Stratified general-population sample from urban and rural areas, contacted by regular post
Lithuania 1137 616 54.2 59 General-population sample in and around Kaunas (urban and rural), contacted by door-to-door cold-calling and personally interviewed by trained medical students
Luxembourg 6498 2023 31.1 58 Stratified general-population sample contacted by regular post
Netherlands-population unknown 2414 incalculable 50 Stratified general-population sample contacted by internet
Spain-workplace 1700 999 58.8 59 Stratified sample of postal services employees, contacted by internal post by occupational health physicians
Studies conducted in general practice settings
Austria unknown, but not > 6000 646 incalculable 70 Consecutive patients consulting GPs or neurologists for any reason; questionnaire handed directly
France 2400 876 36.5 68 Consecutive patients consulting GPs for any reason; questionnaire handed directly
UK 720 128 17.8* 65 Consecutive patients attending GPs for any reason; questionnaire handed directly
Studies among members of lay headache organizations
Ireland members 1500 relatives unknown 195
73
13.0
incalculable
66 Members of Migraine Association of Ireland and their non-biological relatives, contacted by regular post
Netherlands-lay members 500 partners unknown 337
115
67.4
incalculable
57 Random sample of members of Nederlandse Vereniging van Hoofdpijnpatiënten and (where existing) their non-headache-affected partners, contacted by regular post
Spain-lay 300 272 90.7 62 Members of Asociacion Española de Pacientes con Cefalea (AEPAC) and their family; questionnaires distributed by hand via helpers of AEPAC