NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Analysis of population mortality kinetics with application to the longevity followup of the Navy's '1,000 aviators'A simple physiological model of mortality kinetics is used to assess the intuitive concept that the aging rates of populations are proportional to their mortality rates. It is assumed that the vitality of an individual can be expressed as a simple summation of the weighted functional capacities of its organs and homeostatic systems that are indispensable for survival. It is shown that the mortality kinetics of a population can be derived by a linear transformation of the frequency distribution of vitality, assuming a uniform constant rate of decline of the physiological functions. A simple comparison of two populations is not possible when they have different vitality frequency distributions. Analysis of the data using the model suggests that the differences in decline of survivorship with age between the military pilot population, a medically insured population, and the control population can be accounted for by the effect of physical selection on the vitality frequency distribution of the screened populations.
Document ID
19790059194
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Economos, A. C.
(Technology, Inc. Life Sciences Div., Mountain View, Calif., United States)
Miquel, J.
(NASA Ames Research Center Biomedical Research Div., Moffett Field, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
July 1, 1979
Subject Category
Aerospace Medicine
Accession Number
79A43207
Funding Number(s)
CONTRACT_GRANT: NAS2-10053
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available