10 2020 10 On October 28th, the State Council held a press conference on the reform and development of health undertakings in the 13th Five-Year Plan. From 20 15 to the end of 20 19, the average life expectancy of China residents increased from 76.3 years to 77.3 years, which means that it increased by 1 year in four years.
During the 13th Five-Year Plan period on March 5th, 2002 1 year, the average life expectancy in China increased from 76.3 years to 77.3 years, an increase of1year. The government work report puts forward in the outline of the objectives and tasks of the 14 th Five-Year Plan that the average life expectancy will increase by 1 year.
Calculation method:
A series of mathematical formulas are used to calculate the average life expectancy of the population. If described in words, the average life expectancy of the population is calculated by following up a group of people born at the same time, recording their deaths at all ages until the end of the last person's life, and then calculating the average life expectancy of the population according to the number of people who live to all ages.
Use the average life expectancy of this group of people to assume that the average life expectancy of a generation is the average life expectancy. In fact, it is very difficult to track the whole life process of a group of people born at the same time. In actual calculation, the mortality level of people of different ages in the same year can often be used to replace the mortality level of people of different ages in the same generation.
Baidu encyclopedia-life expectancy