Does health-related quality of life predict hospitalization or mortality in patients with atrial fibrillation?

Published on Jan 1, 2014in Journal of Cardiovascular Electrophysiology2.871
· DOI :10.1111/JCE.12266
Eleanor Schron50
Estimated H-index: 50
(NIH: National Institutes of Health),
Erika Friedmann46
Estimated H-index: 46
(UMD: University of Maryland, College Park),
Sue A. Thomas41
Estimated H-index: 41
(UMD: University of Maryland, College Park)
Sources
Abstract
QOL Predicts Hospitalization and Mortality in AF Background Poor health-related quality of life (QOL) is related to morbidity and mortality in coronary heart disease and ventricular arrhythmias as well as to mortality in patients with heart failure (HF) and atrial fibrillation (AF). This study examined the contributions of QOL to the prediction of 1-year hospitalization and mortality in patients with AF, independent of HF. Methods This study used the public use dataset from the NHLBI/NIH AFFIRM randomized clinical trial. Patients enrolled in the QOL substudy (N = 693) were randomly assigned to rate or rhythm control. QOL was assessed with the Medical Outcomes Study 36-item Short Form Health Survey (SF-36) and the Quality of Life Index-Cardiac Version (QLI-CV). Data were analyzed with logistic regression to predict 1-year hospitalization and Cox proportional hazards analysis to predict mortality. Results In the first year of participation in the study 37% (n = 256) were hospitalized; mortality was 14.3% (n = 93) with mean follow-up of 3.5 years. Patients’ mean age was 69.8 ± 8.2 years, were largely male (62%), and white (93%). Patient histories included 70.8% hypertension, 38.2% coronary artery disease (CAD), and 23.7% HF. History of stroke, HF, rhythm control arm, lower SF-36 mental component scores (MCS), and lower SF-36 physical component scores (PCS) predicted hospitalization (P < 0.001). Diabetes, female gender, older age, CAD, hypertension, and lower PCS predicted mortality (P < 0.001). Conclusion QOL adds meaningful information beyond traditional biomedical factors to the prediction of mortality and/or hospitalization of patients with AF. Interventions for improving QOL and helping patients adapt to AF treatments may decrease hospitalization and improve survival.
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