Table 1.
Demographic features of patients with at least one liver biopsy
| Characteristic | Total |
| No of patients (%) | 1606 |
| Males | 940 (58.5) |
| Females | 666 (41.5) |
| Age at infection (n=917) | |
| Mean (SD) | 27.7 (11.8) |
| Median | 24 (0–72) |
| Necroinflammatory score (Ishak) | |
| Mean (SD) | 4.48 (2.1) |
| Median | 4 (0–11) |
| Fibrosis score (Ishak) | |
| Mean (SD) | 2.72 (1.7) |
| Median | 2 (0–6) |
| Duration infection to 1st biopsy | |
| Mean (SD) | 15.1 (9.9) |
| Median | 14 (0–57) |
| Rate (fibrosis units/year) | |
| Mean (SD) | 0.39 (1.28) |
| Median | 0.17 (0–6) |
| Risk factors (%) | |
| Unknown | 622 (43.8) |
| Blood | 433 (27.8) |
| IVDU | 430 (26.8) |
| Multiple | 25 (1.6) |
| Alcohol consumption (units/week) (%) | |
| Unknown | 377 (23.5) |
| Nil | 799 (49.8) |
| <20 | 256 (15.9) |
| 20–40 | 62 (3.9) |
| 40+ | 112 (9.1) |
| Ethnic origin (%) | |
| Caucasian | 1400 (87.2) |
| Non-Caucasian | 206 (12.8) |
| Viral genotype (%) | |
| 1 | 652 (40.6) |
| Non-1 | 330 (20.5) |
| Unknown | 624 (38.9) |
IVDU, intravenous drug use.