Variable Total Study Population Patients free from ATAs Patients with ATA recurrence Statistical Significance
% with prior MI
4% (7/174) 4% (4/114) 6% (2/36)
p = 0.6303‡
% with CHF
85% (148/174) 85% (97/114) 81% (29/36)
p = 0.5179†
Mean LVEF (\(\pm\)SD)
54% (\(\pm\)13.3) (n = 172) 55% (\(\pm\)13.5) (n = 112) 54% (\(\pm\)11.6) (n = 36)
p = 0.6300*
% with NYHA HF Class III or IV 41% (72/174) 43% (49/114) 36% (13/36)
p = 0.4655†
Median length of time in AF (IQR)
7.8 years (4.0-12.0) (n = 174) 7.0 years (3.2-11.0) (n = 114) 10.0 years (4.9-14.5) (n = 36)
p = 0.0858§
Mean LA diameter (\(\pm\)SD) 4.8 cm (\(\pm\)1.0) (n = 158) 4.7 cm (\(\pm\)1.0) (n = 105) 5.1 cm (\(\pm\)1.0) (n = 35)
p = 0.0792*
% failed catheter ablation
71% (124/174)
69% (79/114)
75% (27/36)
p = 0.5124†
Median number of failed catheter ablations (IQR)
2 (1-3) (n = 124) 2 (1-3) (n = 79) 2 (1-2) (n = 27)
p = 0.7012§
% with pacemaker and/or AICD¶
10% (17/174) 6% (7/114) 22% (8/36)
p = 0.0095