肿瘤低发区苍山县肝癌死亡率的变化趋势和对病因研究的启示

The change trend of mortality rate of liver cancer in Cang shan county and the reve lation for the study of epiology

目的观察肿瘤低发区苍山县２５年肝癌死亡率的动态变化。方法采用全死因历年检测登记的方法获取资料，统计分析采用中国１９６４年人口构成进行标化死亡率的计算。结果２５年的动态观察资料显示肝癌的死亡率显著增加。结论同期山东省和全国的死因调查结果也显示肝癌死亡率上升，这一现象表明肝癌的危险因素并非高发区所特有。

Objective To analyse the trend of mortality of liver cancer in the past 25 years(1970-1994) in low incidence area of tumors in Cangshan county.Method The data collected by death survey and standardized mortality rate calculated by using the percentage of population of China.Results The trend of liver cancer mortality increased significantly in past 25 years.Conclusion The risk factors of liver cancer should be paid attention not only to high-mortality area,but also to lowor middle mortality areas.