To the Editor: The clinical trial by Dr Wilber and colleagues1 enrolled patients who were younger than the average person with AF. The mean age in the study was about 56 years; in a study of 17 974 US adults with AF, 45% were 75 years or older, and the prevalence increased from 0.1% among adults younger than 55 years to 9% in persons 80 years or older.2
Rimm AA. Antiarrhythmic Drug Therapy vs Catheter Ablation for Paroxysmal Atrial Fibrillation. JAMA. 2010;303(18):1808–1810. doi:10.1001/jama.2010.538
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