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常德县是全国疾病监测点,本文就该县1970～1988年间60岁以上老年人口数、死亡率、主要死因和平均期望寿命等四个方面的变动趋势作一初步探讨。资料来源与方法死亡资料来自历年各乡、镇卫生院的死亡报告卡和死亡报表。人口资料由该县统计局、
Changde County is a nationwide disease surveillance site. This article makes a preliminary study on the changes in the population, mortality, main causes of death, and average life expectancy of the elderly over the age of 60 from 1970 to 1988. Data sources and methods Death data come from death report cards and death reports of township and township hospitals over the years. Demographic data from the County Bureau of Statistics,