ALB and atrial fibrillation: Elderly (age ≥90 year-old) (HR 1.83, 95%CI 1.00–3.35, P = 0.049), history of AF (HR 2.67, 95%CI 1.53–4.66, P = 0.001), and lower albumin (<3.5 g/dL) (HR 1.92, 95%CI 1.04–3.55, P = 0.036) were significantly associated with MACCE.