['To evaluate amiodarone prophylaxis in diabetics and non-diabetics. Further to clarify whether the risk of developing atrial fibrillation is higher for diabetics than non-diabetic patients, and to evaluate whether the diabetic status has any influence on the length of in-hospital stay.', 'Subgroup analysis within a randomized, controlled, double-blinded trial.', 'At 30 days of follow-up atrial fibrillation was equally frequent among diabetics (22%) and non-diabetics (17%) (p =0.41). The length of in-hospital stay for diabetics was prolonged with 25% (9%; 45%). The prophylactic amiodarone was found equally efficient in diabetics and non-diabetics, as the relative risk ratios were 1.2 (0.4-5.4) and 2.0 (0.3-12.5), respectively.'] Does amiodarone protect diabetics and non-diabetics undergoing coronary artery bypass grafting equally?