On some mortality rate processes and mortality deceleration with age
- 주제(키워드) Evolving heterogeneity , Fixed heterogeneity , Gompertz law of mortality , Mortality process , Mortality rate , Nonhomogeneous Poisson process
- 등재 SCIE, SCOPUS
- 발행기관 Springer Verlag
- 발행년도 2015
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000115505
- 본문언어 영어
- Published As http://dx.doi.org/10.1007/s00285-015-0885-0
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
A specific mortality rate process governed by the non-homogeneous Poisson process of point events is considered and its properties are studied. This process can describe the damage accumulation in organisms experiencing external shocks and define its survival characteristics. It is shown that, although the sample paths of the unconditional mortality rate process are monotonically increasing, the population mortality rate can decrease with age and, under certain assumptions, even tend to zero. The corresponding analysis is the main objective of this paper and it is performed using the derived conditional distributions of relevant random parameters. Several meaningful examples are presented and discussed. © 2015 Springer-Verlag Berlin Heidelberg
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