| Characteristics | Frequencies | |
| Results AgHBs | Results ELISA | |
| 15 - 18 | 4 (16.6%) | 12 (50.0%) |
| 19 - 25 | 40 (42.1%) | 50 (52.6%) |
| 26 - 35 | 35 (41.0%) | 40 (47.0%) |
| Total | 79 (38.7%) | 102 (50%) |