Methods Sampling survey was conducted in Hebei province to collect data on the direct medical spending of hepatitis B and their Disability Adjusted Life Year (DALY) losses.

• 方法 现场调查乙型肝炎 (乙肝 )患者的直接医疗费用 ,并根据 1998年国家卫生服务调查资料和现场调查结果 ,计算乙肝所造成的失能调整生命年损失及其疾病经济负担。