Table 1.
Demographic characteristics and clinical features of the adult HSPN patients at biopsy.
| Items | Values (n = 698) | Items | Values (n = 698) |
|---|---|---|---|
| Male, n (%) | 363 (52.0) | Renal involvement | |
| Age at onset, years | 25.0 (19.0–37.0) | Previous macroscopic hematuria, n (%) | 133 (19.1) |
| Age at biopsy, years | 29.0 (22.0–39.0) | Recurrent macroscopic hematuria, n (%) | 29 (4.2) |
| Duration, months | 11.5 (2.0–48.0) | Macroscopic hematuria, n (%) | 52 (7.4) |
| Purpura duration, months | 9.0 (2.0–48.0) | Microscopic hematuria, n (%) | 547 (78.4) |
| Renal duration, months | 5.0 (1.0–24.0) | Proteinuria, n (%) | 573 (82.1) |
| Inducement | Nephrotic syndrome, n (%) | 69 (9.9) | |
| Infection, n (%) | 81 (11.6) | Renal insufficiency, n (%) | 51 (7.3) |
| Drug, n (%) | 52 (7.4) | Extrarenal manifestation | |
| Food, n (%) | 134 (19.2) | Purpura, n (%) | 698 (100) |
| Seafood, n (%) | 105 (15.0) | Gastrointestinal symptoms, n (%) | 191 (27.4) |
| Other, n (%) | 55 (7.9) | Presence of arthritis, n (%) | 207 (29.7) |
| No clear inducement, n (%) | 404 (57.9) | Hypertension, n (%) | 147 (21.1) |