The comparison between patients with IgAV and general population
| Age (years) | 18–24 | 25–34 | 35–44 | 45–54 | 55–64 | 65–74 | ≥75 | |||||||
| Characteristics | IgAV | Pop | IgAV | Pop | IgAV | Pop | IgAV | Pop | IgAV | Pop | IgAV | Pop | IgAV | Pop |
| Hypertension (%) | 0.0 | 3.5 | 0.0 | 3.6 | 7.7 | 10.4 | 25.8 | 22.5 | 53.5 | 39.2 | 71.7 | 50.7 | 77.5 | 59.9 |
| Diabetes (%) | 0.0 | 0.9 | 0.0 | 1.4 | 3.8 | 1.2 | 16.1 | 4.5 | 30.2 | 11.6 | 23.9 | 16.6 | 22.5 | 18.2 |
| Ischaemic heart disease (%) | 0.0 | 0.7 | 0.0 | 0.3 | 0.0 | 0.3 | 0.0 | 1.9 | 4.7 | 4.3 | 6.5 | 7.5 | 10.0 | 12.5 |
| Stroke (%) | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 2.0 | 6.5 | 2.9 | 7.5 | 6.9 |
| COPD (%) | 0.0 | 1.6 | 0.0 | 2.3 | 7.7 | 2.3 | 0.0 | 3.5 | 16.3 | 5.7 | 17.4 | 6.9 | 7.5 | 8.8 |
| Current smokers (%) | 23.1 | 24.0 | 21.7 | 33.2 | 30.8 | 29.7 | 32.3 | 31.2 | 27.9 | 24.3 | 19.6 | 9.4 | 3.8 | 4.1 |
| BMI 25.0–29.9 (%) | 38.5 | 18.4 | 47.8 | 30.4 | 23.1 | 40.1 | 19.4 | 37.4 | 14.0 | 41.9 | 26.1 | 42.7 | 28.8 | 43.4 |
| BMI ≥30 (%) | 15.4 | 5.1 | 0.0 | 8.1 | 38.5 | 16.2 | 48.4 | 24.3 | 44.2 | 28.8 | 32.6 | 25.9 | 31.3 | 20.8 |
BMI, body mass index (kg/m2); COPD, chronic obstructive lung disease; IgAV, immunoglobulin A vasculitis; Pop, population.