Projecting Age-Specific Death Probabilities at Advanced Ages Using the Mortality Laws of Gompertz and Wittstein
Loading...
Date
2018-12-18
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
In this paper, death probabilities derived from the Gompertz and Wittstein models are
used to project mortality at advanced ages beginning at the age of 101 years. Life table
data of Germany from 1871 to 2012 serve as a basis for the empirical analysis.
Projections of the death probabilities and life table survivors will be shown. The increase
of the death probabilities slows down at very old ages. Finally, Wittstein´s formula will
be regarded as a distribution function. Its reversed hazard rate function, which will be
derived together with the median and the modal value, will clarify the significance of the
parameters of the Wittstein distribution.
Description
Table of contents
Keywords
life table, centenarians, reversed hazard rate, mortality deceleration