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Seasonal mortality and its impact on spatial inequality in life expectancy across Italy

Author

Listed:
  • Isabella Marinetti

    (Max Planck Institute for Demographic Research, Rostock, Germany)

  • Dmitri A. Jdanov

    (Max Planck Institute for Demographic Research, Rostock, Germany)

  • Domantas Jasilionis

    (Max Planck Institute for Demographic Research, Rostock, Germany)

  • Marilia R. Nepomuceno

    (Max Planck Institute for Demographic Research, Rostock, Germany)

  • Fanny Janssen

Abstract

Seasonal mortality fluctuations significantly affect national life expectancy, yet their role in regional inequalities remains underexplored. Understanding this is crucial for targeted health policies aimed at reducing spatial mortality differences. We quantify the impact of seasonal excess mortality on regional life expectancy levels (e0) and inequalities in Italy. Using monthly mortality data from the Italian National Statistical Institute by region (N = 20), sex and age between 2005-2019, we assessed e0 losses due to seasonality by comparing observed mortality with minimum achievable levels. Seasonal effects on inequalities in e0 were quantified by comparing standard deviations with and without excess seasonal mortality and examined regional contributions using decomposition analysis. Eliminating seasonal excess mortality reduced regional e0 differences by 1.4 years (1.36-1.70) on average for both sexes. This effect was most pronounced in southern and insular regions (Campania and Sicilia), especially for winter-related excess mortality. Overall, removing winter excess mortality led to an average of 0.6 years (7.5%) decline in regional inequality. However, during the years with high mortality burdens (2005 and 2015), seasonality contributed to spatial mortality inequality by 10% and 5.2%, respectively. The regional contributions to e0 inequality revealed that Campania and Sicilia also had the strongest role in increasing spatial mortality variation throughout the period. The pronounced regional inequalities in e0 losses due to seasonal excess mortality contributed significantly to shaping regional e0 variation in Italy, mostly due to different impacts of winter mortality within the country.

Suggested Citation

  • Isabella Marinetti & Dmitri A. Jdanov & Domantas Jasilionis & Marilia R. Nepomuceno & Fanny Janssen, 2025. "Seasonal mortality and its impact on spatial inequality in life expectancy across Italy," MPIDR Working Papers WP-2025-013, Max Planck Institute for Demographic Research, Rostock, Germany.
    • Handle: RePEc:dem:wpaper:wp-2025-013
    DOI: 10.4054/MPIDR-WP-2025-013
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    References listed on IDEAS

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    More about this item

    JEL classification:

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

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