Explaining mortality rate plateaus.
basic_science · Level V
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- Record sourced from PubMed, PMID 11752476.
- Also identified by PMC identifier 65038.
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Abstract
We propose a stochastic model of aging to explain deviations from exponential growth in mortality rates commonly observed in empirical studies. Mortality rate plateaus are explained as a generic consequence of considering death in terms of first passage times for processes undergoing a random walk with drift. Simulations of populations with age-dependent distributions of viabilities agree with a wide array of experimental results. The influence of cohort size is well accounted for by the stochastic nature of the model.
Medical subject headings
- Mortality
- Population Dynamics