【摘要】 目的探讨对应分析在生态学研究中的应用。方法用对应分析方法对中国部分城市食品摄入量与男性胃癌死亡之问的关系进行分析。结果从对应分析的因子负荷图中可以看出男性胃癌死亡率存在地区性差异。结论因子负荷图直观地表述了中国部分城市与男性胃癌死亡率存在地区性差异,南方男性居民对米特别是精制的米以及食盐摄入较多,面类、浅色蔬菜摄入量较少。这可能暗示着存在一些致癌因素。更多还原

【Abstract】 Objective To explore the application value of correspondence analysis in ecological study.Methods We adopted correspondence analysis method to analyze the relationship between the amount of food intake in some cities in China and the male gastric carcinoma mortality.Results According to scatter plots of row and column points,there were regional differences among the male gastric carcinoma mortality in different cities of China.Conclusion The scatter plot of row and column points indicated directly that there were regional differences among the male gastric carcinoma mortality in different cities of China.Males from the Southern part of the country ate more rice and salt,less wheaten food and fewer light vegetables than those from the northern parts,suggesting that there might be some carcinogenic factors in some food stuff involved.更多还原