A model of aging and a shape of the observed force of mortality

被引：11

作者：

Finkelstein, MS ^{[1
]}

机构：

[1] Univ Free State, Dept Math Stat, ZA-9300 Bloemfontein, South Africa

来源：

LIFETIME DATA ANALYSIS | 2003年 / 9卷 / 01期

关键词：

accelerated life model; aging; anti-aging; degradation; force of mortality; observed hazard rate; conditional hazard rate; human mortality;

D O I：

10.1023/A:1021886207236

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

A probabilistic model of aging is considered. It is based on the assumption that a random resource, a stochastic process of aging (wear) and the corresponding anti-aging process are embedded at birth. A death occurs when the accumulated wear exceeds the initial random resource. It is assumed that the anti-aging process decreases wear in each increment. The impact of environment (lifestyle) is also taken into account. The corresponding relations for the observed and the conditional hazard rate (force of mortality) are obtained. Similar to some demographic models, the deceleration of mortality phenomenon is explained via the concept of frailty. Simple examples are considered.

引用

页码：93 / 109

页数：17

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