Reliable data on stroke incidence and prevalence are essential for calculating the burden of stroke and the planning of prevention and treatment of stroke patients. In the current study we have reviewed the published data from EU countries, Iceland, Norway, and Switzerland, and provide WHO estimates for stroke incidence and prevalence in these countries.Studies on stroke epidemiology published in peer-reviewed journals during the past 10 years were identified using Medline/PubMed searches, and reviewed using the structure of WHO's stroke component of the WHO InfoBase. WHO estimates for stroke incidence and prevalence for each country were calculated from routine mortality statistics. Rates from studies that met the ÔidealÕ criteria were compared with WHO's estimates.Forty-four incidence studies and 12 prevalence studies were identified. There were several methodological differences that hampered comparisons of data. WHO stroke estimates were in good agreement with results from ÔidealÕ stroke population studies. According to the WHO estimates the number of stroke events in these selected countries is likely to increase from 1.1 million per year in 2000 to more than 1.5 million per year in 2025 solely because of the demographic changes.Until better and more stroke studies are available, the WHO stroke estimates may provide the best data for understanding the stroke burden in countries where no stroke data currently exists. A standardized protocol for stroke surveillance is recommended.
IntroductionRoutine mortality statistics indicate that there are considerable differences in stroke mortality between different European countries with several East European countries having high and increasing stroke mortality rates whilst low and decreasing rates are reported from most West European countries [1]. Projections for the European region suggest that the proportion of the population aged 65+, in which most stroke events occur, will increase from 20% in 2000 to 35% in 2050, and the median age will rise from 37.7 years in 2000 to 47.7 years in 2050 [2]. The projected population for Europe will decrease from 728 million in 2000 to 705 million in 2050, thus the dependency ratio will shift with fewer young people supporting an increasing proportion of elderly people. This will be a tremendous challenge for societies and health systems.Planning future need of health services and improved primary and secondary prevention of stroke require data on stroke occurrence. The present study reviews the available data on stroke from studies in Member States of the European Union, and three countries participating in the European Fair Trade Association (EFTA) Iceland, Norway, and Switzerland, published during the past 10 years using the stroke component of World Health Organization (WHO) InfoBase (Stroke Component of WHO NCD InfoBase). In addition, we present WHO estimates on stroke incidence, prevalence, and projections for these countries.
Materials and methodsStudies on stroke epidemiology in European populations, published in peer-...