Siler Mortality Model
The Siler model is a parametric description of the entire age pattern of mortality, from birth to extreme old age, built as the sum of three competing hazards: a high but rapidly declining risk in early life, a roughly constant background risk through the prime adult years, and an exponentially rising risk of senescence. With just five parameters it reproduces the characteristic U-shaped (or bathtub) mortality curve seen across humans and many animal species. Introduced by William Siler in 1979 for animal mortality, it has become a standard tool in paleodemography, anthropological demography, and comparative life-history studies where a smooth full-lifespan mortality law is needed.
Source record
Citations copied verbatim from the method’s source record. No claim-level verification is inferred from them.
- Siler, W. (1979). A competing-risk model for animal mortality. Ecology, 60(4), 750–757. · DOI 10.2307/1936612
- Gage, T. B., & Dyke, B. (1986). Parameterizing abridged mortality tables: the Siler three-component hazard model. Human Biology, 58(2), 275–291. · URL
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