Abstract:
OBJECTIVES:This study sought to evaluate the associations between different measures of obesity and prevalent atherosclerosis in a large population-based cohort. BACKGROUND:Although obesity is associated with cardiovascular mortality, it is unclear whether this relationship is mediated by increased atherosclerotic burden. METHODS:Using data from the Dallas Heart Study, we assessed the association between gender-specific obesity measures (i.e., body mass index [BMI]; waist circumference [WC]; waist-to-hip ratio [WHR]) and prevalent atherosclerosis defined as coronary artery calcium (CAC) score >10 Agatston units measured by electron-beam computed tomography and detectable aortic plaque measured by magnetic resonance imaging. RESULTS:In univariable analyses (n = 2,744), CAC prevalence was significantly greater only in the fifth versus first quintile of BMI, whereas it increased stepwise across quintiles of WC and WHR (p trend <0.001 for each). After multivariable adjustment for standard risk factors, prevalent CAC was more frequent in the fifth versus first quintile of WHR (odds ratio 1.91, 95% confidence interval 1.30 to 2.80), whereas no independent positive association was observed for BMI or WC. Similar results were observed for aortic plaque in both univariable and multivariable-adjusted analyses. The c-statistic for discrimination of prevalent CAC was greater for WHR compared with BMI and WC in women and men (p < 0.001 vs. BMI; p < 0.01 vs. WC). CONCLUSIONS:We discovered that WHR was independently associated with prevalent atherosclerosis and provided better discrimination than either BMI or WC. The associations between obesity measurements and atherosclerosis mirror those observed between obesity and cardiovascular mortality, suggesting that obesity contributes to cardiovascular mortality via increased atherosclerotic burden.
journal_name
J Am Coll Cardioljournal_title
Journal of the American College of Cardiologyauthors
See R,Abdullah SM,McGuire DK,Khera A,Patel MJ,Lindsey JB,Grundy SM,de Lemos JAdoi
10.1016/j.jacc.2007.04.066subject
Has Abstractpub_date
2007-08-21 00:00:00pages
752-9issue
8eissn
0735-1097issn
1558-3597pii
S0735-1097(07)01761-5journal_volume
50pub_type
杂志文章abstract::The aim of this investigation was to determine the difference in accuracy between two frequently published noninvasive indicators of severity of coronary artery disease (exercise-induced ST segment depression and heart rate-adjusted ST depression [ST/HR index]). The study was designed as a survey of consecutive patien...
journal_title:Journal of the American College of Cardiology
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pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2020-12-01 00:00:00
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更新日期:2016-10-18 00:00:00
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更新日期:2008-12-02 00:00:00