Cost-effectiveness of digoxin versus beta blockers in permanent atrial fibrillation: the Rate Control Therapy Evaluation in Permanent Atrial Fibrillation (RATE-AF) randomised trial.
Zainab Abdali, Karina V Bunting, Samir Mehta, John Camm, Kazem Rahimi, Mary Stanbury, Sandra Haynes, Dipak Kotecha, Sue Jowett
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Abstract
Background: Atrial fibrillation (AF) is a major and increasing burden on health services. This study aimed to evaluate the cost-effectiveness of digoxin versus beta-blockers for heart rate control in patients with permanent AF and symptoms of heart failure.
Methods: RAte control Therapy Evaluation in permanent Atrial Fibrillation (RATE-AF) was a randomised, open-label, blinded, endpoint trial embedded in the UK National Health Service (NHS) to directly compare low-dose digoxin with beta-blockers (ClinicalTrials.gov: NCT02391337). A trial-based cost-utility analysis was performed from a healthcare perspective over 12 months. Resource use in primary and secondary healthcare services, medications and patient-reported quality of life were prospectively collected to estimate differences in costs and quality-adjusted life years (QALYs).
Results: RATE-AF randomised 160 patients with mean age of 76 (SD 8) years and 46% women, of which 149 patients (n=73 digoxin, n=76 beta blockers) had complete data and survived to 12-month follow-up. Treatment with digoxin was significantly less costly, with a mean saving of £530.41 per patient per year (95% CI -£848.06 to -£249.38, p=0.001). This was principally due to substantially lower rates of adverse events, with less primary and secondary healthcare utilisation compared with beta-blocker therapy. There was no significant difference in QALYs (0.013; 95% CI -0.033 to 0.052, p=0.56). At the £20 000 per-QALY willingness to pay threshold, the probability of digoxin being cost-effective compared with beta-blockers was 94%, with potential annual savings to the NHS of £102 million/year (95% CI £48 million to £164 million saving, p=0.001).
Conclusions: Digoxin is a less costly option when compared with beta-blockers for control of heart rate in suitable patients with permanent AF, with larger cost-effectiveness studies warranted to advise on national and global policy-making.
期刊介绍：
Heart is an international peer reviewed journal that keeps cardiologists up to date with important research advances in cardiovascular disease. New scientific developments are highlighted in editorials and put in context with concise review articles. There is one free Editor’s Choice article in each issue, with open access options available to authors for all articles. Education in Heart articles provide a comprehensive, continuously updated, cardiology curriculum.
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