中国肝癌死亡率地理分布分析

目的 探讨肝癌死亡率的地理分布特征,为流行病学研究提供线索.方法 分析我国1990年-1992年第二次死亡原因调查中肝癌的资料和调查地区的经度纬度数据,用趋势面分析方法,研究肝癌与地理因素的关系.结果 肝癌死亡率与地理位置有明显的关系.我国西北和东南地区是肝癌死亡率的高水平区,其中江苏、广西、福建和黑龙江等为肝癌死亡较高的省份;云南、贵州、北京、天津等省市为肝癌相对较低水平的省市.随着经度和纬度增高,肝癌死亡率也升高.线性回归分析表明,肝癌死亡率与经度纬度存在线性关系,P值均<0.05.结论 我国的肝癌死亡率具有明显的地理分布特征,提示环境因素在肝癌的发生发展过程中起着重要作用.

Analysis of liver cancer geographical characteristics in China

Objective To investigate the geographical characteristics of liver cancer in China.Methods The data were from the second cancer death survey,1990-1992,China.GIS map system tool was used to obtain the geography features.SAS statistics software was adopted for analysis.Results Liver cancer was the second leading cancer death in China.Mortality of liver cancer was significant related with longitude and latitude.Southeast,middle south and northeast of China were high mortality areas.Conclusion Liver cancer is the common cancer in China.The distribution of liver cancer is irregular.Geographical epidemiology should be enhanced in order to research liver cancer etiology and further prevention.