The average life expectancy of China residents increased from 35 years in the early days of the People's Republic of China to 74.8 years in 20 10, the maternal mortality rate decreased from 1500/ 100 to 24.5/ 12, and the infant mortality rate decreased from 2 million in the early days of the People's Republic of China. It has dropped to 10.3% in 20 12 years, which comprehensively reflects that the health status of urban and rural residents in China has been in the forefront of developing countries, and people's lives and quality of life have been greatly improved.
Calculation method of average life expectancy of population
A series of mathematical formulas are used to calculate the average life expectancy of the population. If described in words, the calculation method of the average life expectancy of the population is to follow up a group of people born at the same time, record their deaths at all ages until the end of the last person's life, and then calculate the average life expectancy of the population according to the number of people living to all ages, assuming 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 practical calculation, we can often replace the mortality level of the same generation at different ages with the mortality level of the population at all ages in the same year, and then calculate the average number of people at all ages, thus calculating the average life expectancy of the population in that year.