| Mean ± SD (range) | N (%) | |
| Age | 22.4 ± 1.7 y (18 - 28 y) |
|
| Males |
| 59 (39.4%) |
| Females |
| 91 (60.6%) |
| BMI | 25.6 ± 4.0 |
|
| Underweight |
| 3 (2%) |
| Normal (healthy weight) |
| 79 (52.7%) |
| Overweight |
| 54 (36%) |
| Obese |
| 14 (9.3%) |
| Anti-HBs | 8994.2 ± 6373.1 |
|
| Anti-HBs titer 100 - 1000 IU/L |
| 8 (5.4%) |
| Anti-HBs titer 1000 - 10000 IU/L |
| 94 (62.6%) |
| Anti-HBs titer Over 10000 IU/L |
| 48 (32%) |
| HBsAg positive |
| 0 (0%) |
| HBsAg negative |
| 150 (100%) |
| Anti-HBc positive |
| 3 (2%) |
| Anti-HBc negative |
| 147 (98%) |