| Characteristics | Frequencies | |||
| N | Results AgHBs | Results ELISA | ||
| Tattoos | YES | 186 | 38.7% | 52.6% |
| NO | 18 | 38.9% | 38.9% | |
| History of blood transfusion | YES | 134 | 41.0% | 56.0% |
| NO | 70 | 34.2% | 38.6% | |