| Vaccination status | Anti-HBs Ab < 10 IU/L | Anti-HBs Ab > 10 IU/L |
Unvaccinated | 168 | 39.88% (N = 67) | 60.12% (N = 101) |
Vaccinated | 21 | 28.57% (N = 6) | 71.43% (N = 15) |
Total | 189 | 73 | 116 |