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

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 th...

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Bibliographic Details
Published in:Lifetime data analysis 2003-03, Vol.9 (1), p.93-109
Main Author: Finkelstein, M S
Format: Article
Language:English
Subjects:
Aged
Aging
Data Interpretation, Statistical
Female
Humans
Life Style
Male
Mathematical models
Models, Statistical
Mortality
Mortality - trends
Random variables
Risk Assessment
Sensitivity and Specificity
Statistical analysis
Stochastic models
Stochastic Processes
Studies
Theories of aging
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Summary: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.
ISSN:1380-7870
1572-9249
DOI:10.1023/A:1021886207236