The level and trend of changes in inter-individual longevity inequality in Iran

The substantial and continuous decline in mortality has been one of the major gains in socio-economic development over the last two centuries. One of the most important questions in populations in the final stages of the mortality transition is the extent of longevity inequality. The aim of this study is to investigate inter-individual longevity inequality in Iran. In other words, we try to answer the question that to what extent longevity has been distributed equally within individuals and how has changed from 1973 to 2016. Loranz curve, Gini coefficient, standard deviation of longevity, and standard deviation of adult life span were constructed for both males and females. The length of life inequality indices shows that with the improved life expectancy at birth, longevity inequalities have decreased. This changing trend in the longevity inequality coefficients shows that despite a rapid decrease in the Gini coefficient, adult longevity inequities are not easily reduced.