MPIDR Working Paper

Analytic expressions for life expectancy in Gamma-Gompertz Mortality Settings

Missov, T. I.

MPIDR Working Paper WP-2010-020, 8 pages (February 2010).
Rostock, Max Planck Institute for Demographic Research


In a population with Gamma-distributed individual frailty and Gompertz-distributed mortality there is a closed-form analytic expression for calculating the life-expectancy integral. Several simplifications of the resulting formula serve as plausible approximations.