- The age group-based HBsAg (+) ratio was 14.8% among patients <20 years old, 17.1% among patients of 20 - 29 years old, 19.5% among patients of 30 - 39 years old, 23.8% among patients of 40 - 49 years old and 7.9% among patients of 50 - 59 years old.
Tỷ lệ HBsAg (+) ở nhóm tuổi < 20: 14,8%, nhóm tuổi 20-29: 17,1%, nhóm tuổi 30-39: 19,5%, nhóm tuổi 40-49: 23,8%, nhóm tuổi 50-5 9:7, 9%.