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Modelling frontier mortality using Bayesian generalised additive models
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Hilton, Jason, Dodd, Erengul, Forster, Jonathan J. and Smith, Peter W. F. (2021) Modelling frontier mortality using Bayesian generalised additive models. Journal of Official Statistics, 37 (3). pp. 569-589. doi:10.2478/jos-2021-0026 ISSN 2001-7367.
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Official URL: http://dx.doi.org/10.2478/jos-2021-0026
Abstract
Mortality rates differ across countries and years, and the country with the lowest observed mortality has changed over time. However, the classic Science paper by Oeppen and Vaupel(2002)identified a persistent linear trend over time in maximum national life expectancy. Inthis article, we look to exploit similar regularities in age-specific mortality by considering for any given year a hypothetical mortality ‘frontier’, which we define as the lower limit of the force of mortality at each age across all countries. Change in this frontier reflects incremental advances across the wide range of social, institutional and scientific dimensions that influence mortality. We jointly estimate frontier mortality as well as mortality rates for individual countries. Generalised additive models are used to estimate a smooth set of baseline frontier mortality rates and mortality improvements, and country-level mortality is modelled as a set of smooth, positive deviations from this, forcing the mortality estimates for individual countries to lie above the frontier. This model is fitted to data for a selection of countries from the Human Mortality Database (2019). The efficacy of the model in forecasting over a ten-year horizon is compared to a similar model fitted to each country separately.
| Item Type: | Journal Article | ||||||
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| Subjects: | H Social Sciences > HB Economic Theory Q Science > QA Mathematics |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Statistics | ||||||
| Library of Congress Subject Headings (LCSH): | Bayesian statistical decision theory, Mortality -- Statistics, Demography, Population forecasting | ||||||
| Journal or Publication Title: | Journal of Official Statistics | ||||||
| Publisher: | Sciendo | ||||||
| ISSN: | 2001-7367 | ||||||
| Official Date: | 13 September 2021 | ||||||
| Dates: |
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| Volume: | 37 | ||||||
| Number: | 3 | ||||||
| Page Range: | pp. 569-589 | ||||||
| DOI: | 10.2478/jos-2021-0026 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||
| Copyright Holders: | © 2021 Jason Hilton et al., published by Sciendo | ||||||
| Date of first compliant deposit: | 28 October 2021 | ||||||
| Date of first compliant Open Access: | 28 October 2021 |
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