Декомпозиция на промените в средната продължителност на предстоящия живот
DECOMPOSITION OF THE CHANGES IN LIFE EXPECTANCY

Summary/Abstract: The life expectancy of a person aged x years isconsidered one of the most general measures of the socio-economic characteristics of a particular country. Although in interpreting life expectancy we should take into consideration its conventionality, this characteristic is a lot more often used in comparison with the other elements in the life table. As a general rule, in a number of papers, what is meant when the life expectancy is mentioned is the longevity at birth. The synthetic character of the measure is determined by the fact that it reflects the changes of the death rates in the different age groups. The paper presents a discrete method published by Edwardo Arriaga in 1984, which helps to explain the change in the life expectancy considering the changes in the age-specific mortality rates. This method can be applied for x = 0, i. e. for a newborn baby as well as for the life expectancy between two randomly chosen, definite ages. The method presented here can be used to analyse the changes and the differences in the death rates according to gender, region, ethnic belonging etc. This paper analyses the life expectancy dynamics of Bulgarian population during the 1974-2009 period. With the help of respective life tables and the Arriaga method, the different effects of changes in the level and age structure of mortality are assessed.

• Details
• Contents