ALB and atrial fibrillation: Male gender (OR:0.745, 95%CI:0.564–0.982, P = 0.037), CHD (OR:0.322, 95% CI:0.244–0.425, P < 0.001), smoking (OR:0.655, 95% CI:0.0.486–0.884, P = 0.006), TC (OR: 0.728, 95% CI:0.636–0.834, P < 0.001), TG (OR:0.812, 95% CI:0.709–0.931, P = 0.003), LDL-C (OR:0.724 95% CI:0.615–0.852, P < 0.001), albumin (OR:0.936, 95% CI:0.902–0.971, P < 0.001), WBC (OR:0.931, 95% CI:0.880–0.986, P = 0.014), and neutrophil (OR:0.940, 95% CI:0.885–0.998, P = 0.042) were all statistically associated with a low risk of AF.