Estimating Life Expectancy and Construction Life Table in Iran (Past, present, future)

Constructing a life table and using it to estimate life expectancy requires valid and detailed data on mortality and population. Iran, similar to other developing countries, does not have a complete death registration system. In an attempt to estimate life expectancy, several studies have been conducted in Iran based on survey or census data. However, due to the inaccuracy and inconsistency of the results, indirect methods have also been used, and in some cases different results, were obtained. In this paper, the details of several studies that have been carried out to construct life tables for Iran and consequently to estimate life expectancy are reviewed. In this study, not only were trends in child mortality re – estimated for the period 1956 – 2021 by using the Brass method (children ever born and children surviving ) based on data from previous surveys, but also life table were estimated for Iran for the period 1956-2021using the West model from the Coale and Demeny regional life table (1983).
In addition, to estimate life expectancy for those years for which there were no observed data and to make projections, the logistic regression model was used.