Table 2 Frequencies and odds ratio of risk factors by acute hepatitis A cases and controls (hepatitis B and C cases occurred in 2008–2009)
Risk factors | Hepatitis A | Controls (hepatitis B and C) | OR | 95% CI |
|---|---|---|---|---|
Contact with a jaundice case | 1 (1%) | 0 (0%) | - | - |
Shellfish consumption | 83 (85%) | 4 (23%) | 19.2 | 4.8-83.2 |
Raw shellfish consumption | 78 (80%) | 3 (18.0) | 19.1 | 4.4-94.3 |
Travel | 25 (26%) | 2 (12%) | 2.6 | 0.5-17.7 |
Household of day-care child | 12 (12%) | 3 (18%) | 0.66 | 0.1-3.3 |
Intravenous drug use | 1 (1%) | 0 (0%) | - | - |
Well-water drinking | 3 (3%) | 1 (6%) | 0.51 | 0.0-13.58 |