title: A population-based survey of headache and migraine in 22,809 adults.
abstract: A population-based epidemiological study of the prevalence of headache in a sample of 24,682 adults was carried out in Finland. Enquiries were made concerning the frequency of headache, migraine and characteristics of headache attacks in a questionnaire survey in 1981. Headache was classified as migraine, and headache without migrainous features. Possible somatic causes of headache were excluded by record-linkage with three nation-wide medical registries. The prevalence of both headache types depended on age and gender. Among women the overall prevalence of migraine was 10.1% with a maximum of 11.5% in the 40-49 age group. The prevalence rate among men was 2.5% and the female/male gender ratio was 4.0. Women with migraine had an average of 52.5 headache occasions during a year and men with migraine 61 headache occasions per year. At the individual level, headache without migrainous features was least invalidating. There were only 16.5 headache occasions a year among women and 11.5 among men. However, from a population perspective headache without migrainous features accounted for 46.5% of all headache occasions among women and for 60.8% among men. Thus, from the public health view-point, studies of "non-clinical" headache, e.g. headache without migrainous features should be emphasized.
authors.affiliation: Department of Public Health, University of Helsinki, Finland.
authors.forename: M L
authors.initials: ML
authors.lastname: Honkasalo
authors.forename: J
authors.initials: J
authors.lastname: Kaprio
authors.forename: K
authors.initials: K
authors.lastname: Heikkilä
authors.forename: M
authors.initials: M
authors.lastname: Sillanpää
authors.forename: M
authors.initials: M
authors.lastname: Koskenvuo
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D003430:Cross-Sectional Studies; D005260:Female; D005387:Finland / Q000453:epidemiology; D006261:Headache / Q000453:epidemiology*; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000453:epidemiology*; D011159:Population Surveillance; D012042:Registries / Q000706:statistics & numerical data; D012737:Sex Factors