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    Serum and dietary magnesium and incidence of atrial fibrillation in whites and in African Americans: Atherosclerosis risk in communities (ARIC) study

    Access Status
    Open access via publisher
    Authors
    Misialek, J.
    Lopez, F.
    Lutsey, P.
    Huxley, Rachel
    Peacock, J.
    Chen, L.
    Soliman, E.
    Agarwal, S.
    Alonso, A.
    Date
    2013
    Type
    Journal Article
    
    Metadata
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    Citation
    Misialek, J. and Lopez, F. and Lutsey, P. and Huxley, R. and Peacock, J. and Chen, L. and Soliman, E. et al. 2013. Serum and dietary magnesium and incidence of atrial fibrillation in whites and in African Americans: Atherosclerosis risk in communities (ARIC) study. Circulation Journal. 77 (2): pp. 323-329.
    Source Title
    Circulation Journal
    DOI
    10.1253/circj.CJ-12-0886
    ISSN
    1346-9843
    School
    School of Public Health
    URI
    http://hdl.handle.net/20.500.11937/6778
    Collection
    • Curtin Research Publications
    Abstract

    Background: Low serum magnesium (Mg) has been associated with an increased risk of cardiovascular disease (CVD), including ventricular arrhythmias, but the association between serum or dietary Mg and atrial fibrillation (AF) has not been investigated. Methods and Results: A total of 14,290 men and women (75% white; 53% female; mean age, 54 years) free of AF at baseline participating in the Atherosclerosis Risk in Communities study in the United States, were studied. Incident AF cases through 2009 were ascertained from electrocardiograms, hospital discharge codes, and death certificates. Multivariate Cox proportional hazards regression was used to estimate hazard ratios (HR) and 95% confidence intervals (CI) for AF associated with serum and dietary Mg quintiles. Over a median follow-up time of 20.6 years, 1,755 incident AF cases were identified. In multivariate models, lower serum Mg was associated with higher AF risk: compared to individuals in the middle quintile (=0.80-0.83 mmol/L), the HR (95% CI) of AF in quintiles 1, 2, 4, and 5 were 1.34 (1.16-1.54), 0.99 (0.85-1.16), 1.04 (0.90-1.22), and 1.06 (0.91-1.23), respectively. There was no evidence of significant interactions between serum Mg and sex or race. No association between dietary Mg and AF risk was observed. Conclusions: Lower serum Mg was associated with a higher AF risk, and this association was not different between whites and African Americans. Dietary Mg was not associated with AF risk.

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