• Karl Andersen, Thor Aspelund, Elias Freyr Gudmundsson, Gunnar Sigurdsson, Sigurdur Sigurdsson, Gudlaug Björnsdottir, Bolli Thorsson, Thordur Hardarsson, and Vilmundur Gudnason.
• Faculty of Medicine, School of Health Sciences, University of Iceland, Division of Cardiovascular Services, Landspitali University Hospital, Iceland, The Icelandic Heart Association.
• Laeknabladid. 2022 Jul 1; 108 (7-08): 346-355.

IntroductionEducational attainment is related to improved health and longevity. We investigated the relationship between educational attainment and cardiovascular risk factors, subclinical atherosclerosis, and incidence of coronary artery disease.Material And MethodsThe Reykjavik REFINE study is a population-based study recruiting 6616 subjects, 25-69 years of age from the greater Reykjavik area in 2005-2011. Baseline measurements of cardiovascular risk factors were performed, and all participants had a carotid ultrasound examination to detect subclinical atherosclerotic lesions. Clinical follow-up of cardiovascular disease during a ten-year period was performed. Educational attainment was related to clinical outcome measures.ResultsThe study population comprised of 3251 men and 3365 women. The proportion of the study population with primary school education only was 20.1%, 31.2% had vocational training, 12.3% had high school education and 36.4% were university graduates. Traditional cardiovascular risk factors were generally higher among subjects with primary school education only. Compared to subjects with university education, the odds ratio of having severe atherosclerotic plaque was 1.84 (95% CI 1.40-2.43) among those with primary school education only and 1.49 (95% CI 1.16-1.91) among subjects with vocational training. The subjects with high school or university education were less likely to develop significant cardiovascular disease during the 10-year follow-up period.ConclusionPrimary school and vocational training compared to university education are associated with risk factors of atherosclerotic disease, subclinical carotid plaque, and incidence of cardiovascular disease. The reason for this disparity remains to be clarified but socioeconomic inequality related to less educational attainment might be involved.

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