Table 4 Analyses of primary and secondary outcome variables after propensity score matching
From: Metformin therapy and postoperative atrial fibrillation in diabetic patients after cardiac surgery
Variable | Metformin (n = 114) % | Non-metformin (n = 114) % | p value |
|---|---|---|---|
Overall (CABG or valve surgery) | |||
 New atrial fibrillation | 30 (26.3%) | 35 (30.7%) | 0.4658 |
 Acute renal failure | 1 (0.9%) | 0 (0.0%) | NA |
 30-day readmission with arrhythmia | 0 (0.0%) | 1 (0.9%) | NA |
CABG only | NÂ =Â 85 | NÂ =Â 85 | Â |
 New atrial fibrillation | 18 (21.2%) | 24 (28.4%) | 0.2733 |
 Acute renal failure | 1 (1.2%) | 0 (0.0%) | NA |
 30-day readmission with arrhythmia | 0 (0.0%) | 1 (1.2%) | NA |
Valve surgery only | NÂ =Â 57 | NÂ =Â 57 | Â |
 New atrial fibrillation | 19 (33.3%) | 22 (38.6%) | 0.5775 |
 Acute renal failure | 0 (0.0%) | 0 (0.0%) | NA |
 30-day readmission with arrhythmia | 0 (0.0%) | 0 (0.0%) | NA |