|Variable||Odds Ratio||95% Confidence Interval|
|Age group, yrs|
|Quartile 1 (highest)||1.00 (reference)||N/A|
|Quartile 4 (lowest)||1.56||1.19–2.05|
|Coronary artery disease||1.03||0.78–1.34|
N/A = not applicable; other abbreviation as in Table 1.
↵⁎ All others/missing compared with white.
↵† Private insurance compared with Medicare.
↵‡ Defined as the number of AF ablations completed at a given hospital during the 12 months preceding each index ablation.
↵§ Defined as the number of hospitalizations during the year before index ablation with AF in the primary diagnostic position; the odds ratio represents the increase per 1 U increase in AF hospitalizations.