Risk scores predict atherosclerotic lesions in young people

C. Alex McMahan, Samuel S. Gidding, Zahi A. Fayad, Arthur W. Zieske, Gray T. Malcom, Richard E. Tracy, Jack P. Strong, Henry C. McGill

Research output: Contribution to journalArticlepeer-review

144 Scopus citations

Abstract

Background: Atherosclerosis begins in childhood and progresses through young adulthood to form the lesions that cause coronary heart disease. These preclinical lesions are associated with coronary heart disease risk factors in young persons. Methods: The Pathobiological Determinants of Atherosclerosis in Youth study collected arteries and samples of blood and other tissues from persons aged 15 to 34 years who died of external causes and underwent autopsy in forensic laboratories. We measured the coronary heart disease risk factors and atherosclerotic lesions in the coronary arteries (CAs) (n = 1117) and the abdominal aorta (n = 1458). Results: We developed risk scores, normalized so that a 1-unit increase was equivalent to a 1-year increase in age, to estimate the probability of advanced atherosclerotic lesions in the CAs and the abdominal aorta from age, sex, serum lipoprotein concentrations, smoking, hypertension, obesity, and hyperglycemia. Odds ratios for a 1-unit increase in the risk scores were 1.18 (95% confidence interval, 1.14-1.22) for the CAs and 1.29 (95% confidence interval, 1.23-1.35) for the abdominal aorta. These risk scores had good discrimination (c-indexes: 0.78 for the CAs and 0.84 for the abdominal aorta) and were calibrated. The presence of abdominal aortic lesions increased the likelihood of having CA lesions. Conclusion: Risk scores calculated from traditional coronary heart disease risk factors provide a tool for identifying young individuals with a high probability of having advanced atherosclerotic lesions.

Original languageEnglish (US)
Pages (from-to)883-890
Number of pages8
JournalArchives of Internal Medicine
Volume165
Issue number8
DOIs
StatePublished - Apr 25 2005

ASJC Scopus subject areas

  • Internal Medicine

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