Journal
ATHEROSCLEROSIS
Volume 154, Issue 2, Pages 437-448Publisher
ELSEVIER SCI IRELAND LTD
DOI: 10.1016/S0021-9150(00)00486-X
Keywords
carotid arteries; ultrasonics; epidemiology; atherosclerosis; risk factors
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Background: Ultrasound measurement of carotid artery intima-media thickness (IMT) is regarded as a Valid index of atherosclerosis. Age and sex differences in the distribution of, and risk factors for, IMT have not been investigated thoroughly. Methods: In 1993-1995 a total of 6408 men and women aged 25-84 years living in the municipality of Tromso, Norway, underwent ultrasound examination of carotid artery IMT and measurements of cardiovascular risk factors. Results: Age, systolic blood pressure, total cholesterol, HDL, cholesterol, body mass index, and smoking were independent predictors of IMT in both sexes. Fibrinogen levels and physical activity were associated with IMT in men only, whereas triglyceride levels were associated with IMT independently of HDL cholesterol in women only. A family history of cardiovascular disease (CVD) was an independent predictor of IMT in both sexes, also when controlling for traditional CVD risk factors. The magnitude of the association between most risk factors and IMT did not differ depending on age, but the effects of physical activity and triglycerides were more pronounced at higher age. Conclusion: These data suggest that there are significant age and sex differences in the distribution and the determinants of subclinical atherosclerosis. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.
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