MPIDR Working Paper
Admissible mixing distributions for a general class of mixture survival models with known asymptotics
Missov, T. I., Finkelstein, M. S.
MPIDR Working Paper WP-2011-004, 21 pages.
Rostock, Max Planck Institute for Demographic Research (May 2011)
This working paper has been published. See the link above for further information.
Statistical analysis of data on the longest living humans leaves room for speculation whether the human force of mortality is actually leveling o®. Based on this uncertainty, we study a mixture failure model, introduced by Finkelstein and Esaulova (2006) that generalizes, among others, the proportional hazards and accelerated failure time models. In this paper we, first, extend the Abelian theorem of these authors to mixing distributions, whose densities are functions of regular variation. In addition, taking into account the asymptotic behavior of the mixture hazard
rate prescribed by this Abelian theorem, we prove three Tauberian-type theorems that describe the class of admissible mixing distributions. We illustrate our findings with examples of popular mixing distributions that are used to model unobserved heterogeneity.