title: A Canadian population survey on the clinical, epidemiologic and societal impact of migraine and tension-type headache.
abstract: Trained telephone interviewers contacted 1,573 adults across Canada about the nature and frequency of headaches suffered by them or by others in their households. Using a table of pain symptoms and other characteristics abstracted from the International Headache Society (IHS) classification, the headaches were assigned to migraine headache, tension-type headache or other diagnostic groups. Of the households sampled, 59% had at least one headache sufferer in residence. The proportion of headache sufferers with migraine was 14%; with tension-type, 36%; and with both, 14%. Migraine headache caused more disability than tension-type headache, with nearly 20% of migraine sufferers taking time off work and disability lasting for a mean of 1 day. It is concluded that the current prevalences of migraine and tension-type headache in Canada fall around the mean of previous studies, that the IHS criteria can form a basis for diagnostic classification and that the functional impact of migraine has been seriously underestimated in the past.
authors.affiliation: Division of Neurology, Health Sciences Centre, St. John's Newfoundland.
authors.forename: W
authors.initials: W
authors.lastname: Pryse-Phillips
authors.forename: H
authors.initials: H
authors.lastname: Findlay
authors.forename: P
authors.initials: P
authors.lastname: Tugwell
authors.forename: J
authors.initials: J
authors.lastname: Edmeads
authors.forename: T J
authors.initials: TJ
authors.lastname: Murray
authors.forename: R F
authors.initials: RF
authors.lastname: Nelson
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002170:Canada; D005260:Female; D006261:Headache / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000453:epidemiology*; D012737:Sex Factors; D012959:Socioeconomic Factors