Demographic and clinical data for patients with IgA vasculitis (IgAV) and non-exposed controls at time zero.
| Characteristic | IgAV, n = 504 | Controls, n = 1281 | p |
|---|---|---|---|
| Male, n (%) | 298 (59.1) | 648 (66.2) | < 0.01 |
| Age, yrs, median (IQR) | 5 (3–7) | 6 (4–8) | < 0.01 |
| Indigenous background, n (%) | 19 (3.8) | 11 (0.9) | < 0.01 |
| Non-metropolitan residence, n (%) | 144 (28.6) | 349 (27.2) | 0.35 |
| Arthralgia or arthritis, n (%) | 82 (15.9) | 136 (10.5) | < 0.01 |
| Glomerulonephritis/hematuria, n (%) | 7 (1.4) | 1 (0.1) | < 0.01 |
| Noninfectious enteritis, n (%) | < 5 (0.8) | 0 | NA |
| Increased ESR, n (%) | 41 (8) | 63 (4.9) | < 0.01 |
| Skin biopsy performed, n (%) | 54 (10.5) | — | NA |
| Median (IQR) length of hospital stay, days | 2 (1–5) | 2 (1–3) | < 0.01 |
Small numbers (n < 5) were made confidential following requirements of the Human Research Ethics Committee at the Western Australia Department of Health. ESR: erythrocyte sedimentation rate; IQR: interquartile range; NA: not applicable.