Medianlivslängd

Medianlivslängd, often translated as median life expectancy, is a statistical measure representing the age at which half of a population is expected to die. It is calculated by finding the midpoint of the age distribution of deaths within a specific population group and time period. This differs from average life expectancy, which is the arithmetic mean of all ages at death. The median is less affected by extreme values, making it a robust indicator, especially when dealing with populations where a few individuals might live exceptionally long or short lives.

Median life expectancy is a key demographic indicator used to assess the overall health and living conditions of a population. Factors such as healthcare access, nutrition, sanitation, and lifestyle choices significantly influence this metric. Improvements in these areas tend to lead to an increase in median life expectancy, while declines can result in a decrease. It is often used to compare populations across different regions or to track trends over time within a single population. Like average life expectancy, median life expectancy can be calculated for specific groups within a population, such as by sex or socioeconomic status.