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The contribution of obesity to carotid atherosclerotic plaque burden in a general population sample in Norway: The Tromsø Study.

Imahori, Y; Mathiesen, EB; Leon, DA; Hopstock, LA; Hughes, AD; Johnsen, SH; Jørgensen, L; ... Morgan, KE; + view all (2018) The contribution of obesity to carotid atherosclerotic plaque burden in a general population sample in Norway: The Tromsø Study. Atherosclerosis , 273 pp. 15-20. 10.1016/j.atherosclerosis.2018.04.014. Green open access

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Abstract

BACKGROUND AND AIMS: Few studies have investigated the association of different measures of adiposity with carotid plaque. We aimed to investigate and compare the associations of four measures of adiposity: body mass index (BMI), waist circumference (WC), waist-to-hip ratio (WHR), and waist-to-height ratio (WHtR) with the presence of carotid plaque and total plaque area (TPA) in the right carotid artery. METHODS: We included 4906 individuals aged 31-88 years who participated in a population-based study with ultrasonography of the right carotid artery. Adiposity measures were converted to sex-specific SD units to allow comparison of effect sizes. TPA was log transformed due to its skewed distribution. Logistic and linear regression models were used respectively to investigate the association of each adiposity measure with the presence of plaque and with log-transformed TPA. Estimates were adjusted for potential confounders and mediators such as blood pressure and lipids. RESULTS: After adjustment for age, sex, smoking, and education level, there was strong evidence of an association between all adiposity measures and log-transformed TPA, whereas only WHR was weakly associated with presence of plaque. WHR showed the largest adjusted effect size for both log-transformed TPA (beta 0.055, 95%CI 0.028-0.081) and the presence of plaque (OR 1.07, 95%CI 1.01-1.15). Adjustment for mediators led to appreciable attenuation of observed effects. CONCLUSIONS: Adiposity is more consistently associated with extent of plaque burden than with whether an individual does or does not have any plaque. There was evidence that established biomarkers mediate much of this association. Abdominal adiposity appears to show the strongest effect.

Type: Article
Title: The contribution of obesity to carotid atherosclerotic plaque burden in a general population sample in Norway: The Tromsø Study.
Location: Ireland
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.atherosclerosis.2018.04.014
Publisher version: https://doi.org/10.1016/j.atherosclerosis.2018.04....
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Adiposity, Anthropometric measures, Atherosclerosis, Carotid plaque, Waist-to-hip ratio (WHR)
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute of Cardiovascular Science
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute of Cardiovascular Science > Population Science and Experimental Medicine
URI: https://discovery.ucl.ac.uk/id/eprint/10047958
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