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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，而是在很多地区环境中普遍存在的
Objective To observe the dynamic changes of liver cancer mortality in Cangshan County, a region with low incidence of tumors, for 25 years. Methods Data were collected using the method of registration of all deaths in the calendar year. Statistical analysis was conducted using the population composition of China in 1964 to calculate the standardized mortality rate. Results The 25-year dynamic observation data showed a significant increase in the mortality of liver cancer. Conclusion The results of the cause of death in Shandong Province and across the country during the same period also showed an increase in liver cancer mortality. This phenomenon indicates that the risk factors for liver cancer are not unique to high-incidence areas, but are prevalent in many areas.