Document Classification

Section Type: RESULTS

Text: Atrial tachyarrhythmias occurred in fewer amiodarone patients (48/299 ; 16. 1 %) than in placebo patients (89/302 ; 29. 5 %) overall (hazard ratio [HR], 0. 52 ; 95 % confidence interval [CI], 0. 34-0. 69 ; P <. 001) ; in patients younger than 65 years (19 [11. 2 %] vs 36 [21. 1 %] ; HR, 0. 51 [95 % CI, 0. 28-0. 94] ; P =. 02) ; in patients aged 65 years or older (28 [21. 7 %] vs 54 [41. 2 %] ; HR, 0. 45 [95 % CI, 0. 27-0. 75] ; P <. 001) ; in patients who had CABG surgery only (22 [11. 3 %] vs 46 [23. 6 %] ; HR, 0. 45 [95 % CI, 0. 26-0. 79] ; P =. 002) ; in patients who had valve replacement/repair surgery with or without CABG surgery (25 [23. 8 %] vs 44 [44. 1 %] ; HR, 0. 51 [95 % CI, 0. 31-0. 84 ; P =. 008) ; in patients who received preoperative beta-blocker therapy (27 [15. 3 %] vs 42 [25. 0 %] ; HR, 0. 58 [95 % CI, 0. 34-0. 99] ; P =. 03) ; and in patients who did not receive preoperative beta-blocker therapy (20 [16. 3 %] vs 48 [35. 8 %] ; HR, 0. 40 [95 % CI, 0. 22-0. 71] ; P <. 001), respectively.