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Canadian Journal of Cardiology
Editorial| Volume 35, ISSUE 10, P1291-1293, October 2019

Challenges in Assessing the Incidence of Atrial Fibrillation Hospitalizations

  • Michelle Samuel
    Affiliations
    Division of Clinical Epidemiology, McGill University Health Centre Research Institute, Montreal, Quebec, Canada

    Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada
    Search for articles by this author
  • James M. Brophy
    Correspondence
    Corresponding author: Dr James M. Brophy, McGill University Health Centre, Centre for Outcomes Research and Evaluation (CORE), 5252 Boul de Maisonneuve West, room 2B.37, Montreal, Quebec H4A 3S5, Canada. Tel.: +1-514-934-1934 ×36771; fax: +1-514-843-1493.
    Affiliations
    Division of Clinical Epidemiology, McGill University Health Centre Research Institute, Montreal, Quebec, Canada

    Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada

    Division of Cardiology, McGill University Health Centre Research Institute, Montreal, Quebec, Canada
    Search for articles by this author
      Atrial fibrillation (AF) is the most common sustained cardiac rhythm disorder, affecting 1%-4% of the global population.
      • Rahman F.
      • Kwan G.F.
      • Benjamin E.J.
      Global epidemiology of atrial fibrillation.
      The lifetime risk of developing AF is approximately 25%, which increases with age and other risk factors.
      • Wang T.J.
      • Larson M.G.
      • Levy D.
      • et al.
      Temporal relations of atrial fibrillation and congestive heart failure and their joint influence on mortality: the Framingham Heart Study.
      It is currently estimated that 33.5 million people worldwide
      • Chugh S.S.
      • Havmoeller R.
      • Narayanan K.
      • et al.
      Worldwide epidemiology of atrial fibrillation: a Global Burden of Disease 2010 Study.
      and more than 350,000 Canadians have AF and the prevalence is expected to increase threefold over the next 3 decades with experts categorizing the disease as a future epidemic.
      • Morin D.P.
      • Bernard M.L.
      • Madias C.
      • et al.
      The state of the art: atrial fibrillation epidemiology, prevention, and treatment.
      The increasing prevalence has important public health implications because AF is responsible for more disability than any other cardiac arrhythmia.
      • Coyne K.S.
      • Paramore C.
      • Grandy S.
      • et al.
      Assessing the direct costs of treating nonvalvular atrial fibrillation in the United States.
      In a study that assessed the total costs of AF care in Canada, more than 50% of the costs of AF represent the direct and indirect costs associated with hospitalizations.
      • Coyne K.S.
      • Paramore C.
      • Grandy S.
      • et al.
      Assessing the direct costs of treating nonvalvular atrial fibrillation in the United States.
      • Xian Y.
      • Wu J.
      • O’Brien E.C.
      • et al.
      Real world effectiveness of warfarin among ischemic stroke patients with atrial fibrillation: observational analysis from Patient-Centered Research into Outcomes Stroke Patients Prefer and Effectiveness Research (PROSPER) study.
      Further, using administrative data from across Canada, the Canadian Cardiovascular Outcomes Research Team reported that AF hospitalizations were rapidly increasing.
      • Kotowycz M.A.
      • Filion K.B.
      • Joza J.
      • et al.
      In-hospital management of atrial fibrillation: the CHADS(2) score predicts increased cost.
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