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Table 3 Association between POAF and pre-operative characteristics that were recorded

From: A double-blind randomised controlled trial on the effect of Tocovid, a tocotrienol-rich capsule on postoperative atrial fibrillation at the National Heart Institute, Kuala Lumpur: an interim blinded analysis

Pre-operative characteristic Total*, n (%) Non-POAF group, n (%) POAF group, n (%) p value
Body mass index (kg/m2) 27.23 ± 4.61 27.43 ± 4.55 27.03 ± 5.20 0.50a
 < 18.5 2 (1.29) 1 (50) 1 (50)  
 18.5–22.9 28 (17.95) 19 (67.90) 9 (32.10)  
 23–29.9 83 (53.20) 66 (79.50) 17 (20.50)  
 ≥ 30 43 (27.56) 32(74.40) 11 (25.60)  
New York heart functional class 0.57a
 NYHA I 58 (53.71) 43 (74.14) 15 (25.86)  
 NYHA II 48 (44.44) 32 (66.70) 16 (33.30)  
 NYHA III 2 (1.85) 1 (50) 1 (50)  
 NYHA IV 0 (0) (0) (0)  
Left ventricular ejection fraction 46.35 ± 15.82 46.96 ± 15.26 44.87 ± 17.25 0.49b
Left atrial size (mm) 18.43 ± 5.48 18.11 ± 5.89 19.16 ± 4.43 0.10c
Right atrial size (mm) 13.83 ± 4.02 13.58 ± 3.99 14.36 ± 4.09 0.14c
  1. Total n varies slightly for each item due to a small amount of missing data in each
  2. aTest using Chi Square test
  3. bTest using independent t test
  4. cTest using Mann–Whitney test