Table 1. Baseline characteristics of the total sample, and for individuals with and without incident diagnosis of atrial fibrillation.
| Baseline characteristics | Total (n=1 22 822) | AF-free (n=1 12 466) | Incident AF (n=10 356) |
|---|---|---|---|
| Age, mean (SD) | 50.8 (6.9) | 50.4 (6.8) | 54.9 (6.7) |
| Women, n (%) | 57 708 (46.9) | 54 207 (48.2) | 3501 (33.8) |
| Albumin (g/L), mean (SD) | 42.5 (2.6) | 42.5 (2.6) | 42.2 (2.6) |
| Uric acid (μmol/L), mean (SD) | 287.7 (71.4) | 285.7 (70.9) | 309.4 (72.5) |
| Triglycerides (mmol/L), mean (SD) | 1.4 (1.1) | 1.4 (1.1) | 1.5 (1.2) |
| Total cholesterol (mmol/L), mean (SD) | 5.8 (1.1) | 5.8 (1.1) | 5.9 (1.1) |
| Glucose (mmol/L), mean (SD) | 5.0 (1.1) | 5.0 (1.1) | 5.2 (1.3) |
| Iron (μmol/L), mean (SD) | 17.9 (5.4) | 17.9 (5.4) | 18.0 (5.3) |
| Alkaline phosphatase (µkat/L), mean (SD) | 2.6 (1.0) | 2.6 (1.1) | 2.8 (0.9) |
| Gamma-GT (µkat/L), mean (SD) | 0.5 (0.8) | 0.5 (0.7) | 0.6 (0.8) |
| Haptoglobin (g/L), mean (SD) | 1.1 (0.3) | 1.1 (0.3) | 1.1 (0.3) |
| ASAT (µkat/L), mean (SD) | 0.4 (0.4) | 0.4 (0.4) | 0.4 (0.2) |
| ALAT (µkat/L), mean (SD) | 0.5 (0.7) | 0.4 (0.7) | 0.5 (0.4) |
| eGFR (mL/min/1.73 m2), mean (SD) | 87.0 (13.1) | 87.2 (13.1) | 85.0 (13.2) |
| Fructosamine (mmol/L), mean (SD) | 2.1 (0.2) | 2.1 (0.2) | 2.1 (0.2) |
| C-reactive protein (mg/L), mean (SD) | 5.7 (19.0) | 5.7 (19.2) | 5.7 (17.1) |
AF, atrial fibrillation; ALAT, alanine transaminase; ASAT, aspartate transaminase; eGFR, estimated glomerular filtration rate; Gamma-GT, Gamma-glutamyl transferase.