Table 1 Descriptive statistics of study population
|  | N = 5513 (100%) |
|---|---|
Sex | Â |
 Male | 2023 (36.70) |
 Female | 3490 (63.30) |
Age | Â |
 Mean (SD) | 51.4 (17.27) |
 < 40 | 1523 (27.63) |
 40–50 | 1165 (21.13) |
 50–65 | 1460 (26.48) |
 > 65 | 1365 (24.76) |
SES | Â |
 Unclassified/missing | 1224 (22.20) |
 Low | 2213 (40.14) |
 High | 2076 (37.66) |
Education | Â |
 Missing | 500 (9.07) |
 Low | 1505 (27.30) |
 Middle | 2203 (39.96) |
 High | 1305 (23.67) |
Charlson comorbidity index | Â |
 0 | 4630 (83.98) |
 1 | 440 (7.98) |
 2 | 293 (5.31) |
 3+ | 150 (2.72) |
Biomarkers | Mean (SD) |
|---|---|
IgA (g/L) | 2.65 (1.39) |
IgG (g/L) | 12.65 (3.91) |
IgM (g/L) | 1.34 (1.03) |
CRP (mg/L) | 6.04 (12.63) |
Haptoglobin (g/L) | 1.14 (0.36) |
Albumin (g/L) | 42.40 (3.23) |
White blood cells (109 cells/L) | 6.82 (3.37) |
Iron (µmol/L) | 16.27 (5.54) |
Total iron-binding capacity (µmol/L) | 60.27 (8.63) |