In the article, “Catheter Ablation Versus Antiarrhythmic Drugs for Atrial Fibrillation: The A4 Study,” by Jaïs et al, which appeared in the December 9, 2008, issue of the journal (Circulation. 2008;118:2498–2505), 2 important errors were made.
On page 2500, the words “median” and “minutes” should have been used instead of “mean” and “hours” in the sentence that reads, “(AF burden was calculated as the mean number of hours in AF over a 24-hour period for each Holter recording.)”
On page 2502, under AF Burden, the word “hours” should be replaced throughout by the word “minutes.”
The online version of the article has been corrected. The authors regret these errors.