Fig. 1: Annual values of life expectancy in Germany with fit (blue). The fit did not respect the values for 2021 and 2022.
Life expectancy is relatively difficult to calculate. The mortality risk has to be determined from death and population figures for each individual year of life. A hurdle is that data are often only available in age cohorts. So the missing values have to be interpolated. Using the mortality risks, a fictitious newborn cohort is projected forward year by year until all have died. A weighted average value is calculated from those who died each year in this modeled time series, yielding the life expectancy.
Author(s): ULF LORRÉ
Publication Date: 30 Mar 2023
Publication Site: Demographic Data Analysis