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| Risk Factors | Age (years) | x(2) | p-value | |
| ≤ 30No. (%) | ≥ 31 No. (%) | |||
| HBsA (+) Spouse | 15/18.8 | 14/28.6 | 1.68 | 0.20 |
| Hemodialysis (+) | 16/20.0 | 23/46.9 | 10.45 | < 0.001 |
| HBsAg (+) Parents | 23/28.8 | 5/10.2 | 6.15 | 0.01 |
