Résumé :
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[BDSP. Notice produite par INIST NTYsR0xs. Diffusion soumise à autorisation]. Background Hypertension is an essential risk factor for development of cardiovascular diseases. Prospective studies show a reduction in risk of myocardial infarction with reduction of blood pressure. In Denmark there was a decrease in ischaemic heart disease mortality during the period (1968-1992) with around 34% in 30-65 year old men and 30% in women. Objective To assess the changes in casual blood pressure between 1964 and 1991 in seven cross-sectional population studies. Setting Centre of Preventive Medicine, University of Copenhagen, DK-2600 Glostrup. Population 10 359 subjects, equal numbers of men and women, age exactly 30,40,50 and 60 years drawn as random samples from a background population of 300 000 inhabitants and surveyed in 1964-1974 and five cross-sectional studies 1976,1978,1982-1984,1986-1987 and 1991. Methods Blood pressure was measured according to WHO criteria by one technician in each survey. Alcohol consumption and physical activity were measured by a self-administered questionnaire. The weight and height were measured by standardized methods. Data on mortality from ischaemic heart disease were obtained from death certificates recorded by the National Board of Health. Results Blood pressure increased with increasing age in both genders and was significantly higher in men than in women. Median blood pressure in 50 year old men in 1964 was 135/85 mmHg and in 1991 it was 123/79, whereas in women in 1964 it was 140/85, against 119/74 in 1991. (...)
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