2005年中国居民与日本居民期望寿命的比较研究

目的研究2005年中国、日本居民期望寿命情况并进行比较分析,为有关部门提供科学依据。方法利用世界卫生组织（WHO）公布的中国、日本2005年各个年龄组平均人口数（Px）实际死亡人数（Dx）,采用Chiang C.L.（蒋庆琅法）推算中国、日本居民的各个年龄组死亡概率、期望寿命等指标并进行比较分析。结果2005年日本居民期望寿命[0,1）岁组比中国居民期望寿命[0,1）岁组延长9.8岁;日本居民寿命表的中位年龄为87.9岁,中国居民寿命表的中位年龄为79.3岁。结论2005年日本居民各个年龄组的期望寿命均高于中国。要提高中国居民的期望寿命重点在于[0,15）人群,尤其要提高婴幼儿组的期望寿命。

Study on life expectancies of Chinese and Japanese in 2005

Objective To analyze and compare the situations of Chinese and Japanese's life expectancies of 2005 and provide science basis to relevant departments.Methods Employing the data issued by WHO,to speculate and analyze death probabilities and life expectancies in every age specific of Chinese and Japanese with Chiang C.L.Results Japanese life expectancy of [0,1)age specific was 9.8 years higher than that of Chinese,with the respective median 87.9 years and 79.3 years.Conclusion Japanese life expectancies of every age specifics was higher than those of Chinese.In order to prolong Chinese life expectancies,we should focus more on [0,15)age specific,especially on [0,1)age specific.