Table 1 Characteristics of Study Participants
Characteristic | Patients (n = 161) | Controls (n = 356) |
|---|---|---|
Sex ratio M/F | 89:72 (1.23) | 194:162 (1.19) |
Mean age [range] years | 13.9 ± 1.2 [13–18] | 14.2 ± 0.8 [13–18] |
Living in family/institution | 113/48 (2.35) | 323/33 (9.8) |
Vaccinated against hepatitis B | 35 (21.7%) | 51 (14.3%) |
Efficient seroconversion after hepatitis B immunization (anti HBs+, anti HBc-) | 7/35 (20%) | 40/51 (78.4%) |