Variable | % cases (n = 178) | % controls (n = 356) | Unadjusted OR (95%CI) | Adjusted OR (95%CI)* |
---|---|---|---|---|
Social behavior | Â | Â | Â | Â |
Tattooing | 15.2 | 4.2 | 4.1 (2.0–8.3) | 4.4 (1.6–11.9) |
   P value |  |  | <0.001 | 0.004 |
Intravenous drug use | 25.3 | 0.3 | 120.1 (17.7–2368.7) | 105.2 (12.8–865.3) |
   P value |  |  | <0.0001 | <0.00001 |
Sexual behavior | Â | Â | Â | Â |
Age of the first sexual intercourse (years) | Â | Â | Â | Â |
   ≥ 18 | 24.9 | 31.1 | 1.0 | 1.0 |
   15–17 | 43.5 | 44.7 | 1.2 (0.8–1.9) | 0.7 (0.4–1.4) |
   <15 | 31.6 | 24.2 | 1.6 (1.0–2.7) | 1.0 (0.5–1.7) |
   P value |  |  | 0.1 | 0.6 |
Number of sexual partners (median)** | Â | Â | Â | Â |
Past ten years | Â | Â | Â | Â |
   Male <5 / Female <2 | 57.1 | 61.5 | 1.0 | 1.0 |
   Male ≥ 6 / Female ≥ 2 | 42.9 | 38.5 | 1.2 (0.8–1.7) | 1.3 (0.8–2.2) |
   P value |  |  | 0.3 | 0.3 |
Lifetime | Â | Â | Â | Â |
   Male ≤ 10 / Female ≤ 2 | 46.3 | 56.7 | 1.0 | 1.0 |
   Male ≥ 11 / Female ≥ 3 | 53.7 | 43.3 | 1.5 (1.1–2.2) | 0.8 (0.5–1.3) |
   P value |  |  | 0.02 | 0.4 |
Number of lifetime sexually transmitted diseases | Â | Â | Â | Â |
   0 | 49.2 | 76.9 | 1.0 | 1.0 |
   1 | 41.2 | 21.9 | 3.0 (1.9–4.5) | 2.0 (1.1–3.5) |
   2–4 | 9.6 | 1.1 | 13.2 (4.0–47.7) | 6.2 (1.5–25.3) |
   P value |  |  | <0.0001 | 0.006 |
Sexual orientation | Â | Â | Â | Â |
   Heterosexual | 84.2 | 95.1 | 1.0 | 1.0 |
   Bisexual/homosexual | 15.8 | 4.9 | 3.7 (1.9–7.3) | 0.8 (0.3–2.2) |
   P value |  |  | <0.0001 | 0.7 |
Sexual intercourse with intravenous drug user | 8.0 | 2.0 | 4.8 (1.8–13.3) | 3.5 (1.2–9.8) |
   P value |  |  | 0.001 | 0.02 |
Sexual intercourse with a partner with hepatitis B or C virus | 4.5 | 1.7 | 2.8 (0.9–9.3) | 3.7 (1.1–12.8) |
   P value |  |  | 0.04 | 0.04 |