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The Average Uneven Mortality index: Building on the ‘e-dagger’ measure of lifespan inequality

Author

Listed:
  • Marco Bonetti

    (Università Bocconi)

  • Ugofilippo Basellini

    (Max-Planck-Institut für Demografische Forschung)

  • Andrea Nigri

    (Università degli studi di Foggia)

Abstract

Background: In recent years, lifespan inequality has become an important indicator of population health. Uncovering the statistical properties of lifespan inequality measures can provide novel insights on the study of mortality. Methods: We introduce the ‘Average Uneven Mortality’ (AUM) index, a novel mortality indicator for the study of mortality patterns and lifespan inequality. We prove some new properties of interest, as well as relationships with the ‘e-dagger’ and entropy measures of lifespan inequality. Results: The use of the AUM index is illustrated through an application to observed period and cohort death rates from the Human Mortality Database. We explore the behavior of the index across age and over time, and we study its relationship with life expectancy. The AUM index at birth declined over time until the 1950s, when it reverted its trend; also, the index generally increases with age. Contribution: The AUM index is a normalized version of Vaupel and Canudas-Romo’s e-dagger measure that can be meaningfully compared across countries and over time. Additionally, we derive an upper bound for both e-dagger and the life-table entropy measures, which are novel formal results. Finally, we develop novel routines to compute e-dagger and the standard deviation of lifetimes from death rates, which are often more precise than available software, particularly for calculations involving older ages.

Suggested Citation

  • Marco Bonetti & Ugofilippo Basellini & Andrea Nigri, 2024. "The Average Uneven Mortality index: Building on the ‘e-dagger’ measure of lifespan inequality," Demographic Research, Max Planck Institute for Demographic Research, Rostock, Germany, vol. 50(44), pages 1281-1300.
    • Handle: RePEc:dem:demres:v:50:y:2024:i:44
    DOI: 10.4054/DemRes.2024.50.44
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    References listed on IDEAS

    as
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    More about this item

    Keywords

    formal demography; lifespan inequality; mortality plateau; mortality age-pattern; exponential distribution;
    All these keywords.

    JEL classification:

    • J1 - Labor and Demographic Economics - - Demographic Economics
    • Z0 - Other Special Topics - - General

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