ReviewStroke epidemiology: a review of population-based studies of incidence, prevalence, and case-fatality in the late 20th century
Section snippets
Search strategy and selection criteria
Data for this review were identified by searches of Medline (January, 1966, to August, 2002), and from the references of relevant articles. Different subsets of studies were potentially eligible for different parts of this review. The search terms “population-based”, “community-based”, “community”, “epidemiology”, “epidemiological”, “incidence”, “prevalence”, “attack rates”, “survey”, “surveillance”, “mortality”, “morbidity”, “fatality”, “case-fatality”, “stroke”, “isch(a)emic stroke”,
Stroke incidence
15 population-based stroke incidence studies that met our eligibility criteria were identified and included in the analysis (table 1, figure 1).22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37 These studies covered a population of 3 266 366 people in 13 countries, with 4 398 158 person-years of observation. The frequency of admission to hospital ranged from 41% in Japan to 94·6% in Germany (mean 81%). In five of the 15 studies, the information on timing of CT or MRI after stroke
Discussion
We have reviewed the epidemiology of stroke predominantly in more developed countries on the basis of well-designed population-based studies. Compared with the two most recent reviews of stroke incidence in various countries published in 199712 and 1998,13 our review included 17 new population-based studies (nine new stroke-incidence studies published since 1990 and eight new studies on secular trends in stroke incidence) and nine stroke-prevalence studies that have not been reviewed
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