Table 2 Environmental risk factors for HCV seropositivity among blood donors from southern Brazil
Variable | % cases (n = 178) | % controls (n = 356) | Unadjusted OR (95%CI) | Adjusted OR (95%CI)* |
|---|---|---|---|---|
Lived in shelter/boarding school | 11.2 | 6.7 | 1.8 (0.9–3.4) | 1.9 (1.0–3.6) |
   P value |  |  | 0.08 | 0.07 |
Household contact with jaundice or hepatitis | 18.5 | 14.0 | 1.3 (0.8–2.3) | 1.6 (0.2–2.6) |
   P value |  |  | 0.2 | 0.08 |
Incarceration | 11.8 | 2.0 | 6.7 (2.6–17.7) | 5. 2 (2.1–12.8) |
   P value |  |  | <0.0001 | 0.0003 |
Enrolled in the army | 24.7 | 27.5 | 0.8 (0.6–1.3) | 0.9 (0.6–1.4) |
   P value |  |  | 0.5 | 0.6 |
Worked at detention center or prison | 2.2 | 2.5 | 0.8 (0.2–3.2) | 0.8 (0.2–2.7) |
   P value |  |  | 0.8 | 0.7 |
Occupational blood exposure | 7.9 | 9;8 | 0.8 (0.4–1.6) | 0.6 (0.3–1.3) |
   P value |  |  | 0.5 | 0.2 |