Summertime, and the livin’ is easy: Winter and summer pseudoseasonal life expectancy in the United States

Tina Ho and Andrew Noymer
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Tina Ho: University of California, Irvine
Andrew Noymer: University of California, Irvine

Demographic Research, 2017, vol. 37, issue 45, 1445-1476

Abstract: Background: In temperate climates, mortality is seasonal with a winter-dominant pattern, due in part to specific causes of death, including pneumonia, influenza, and cold-induced thrombosis. Cardiac causes, which are the leading cause of death in the United States, are winter-seasonal, although the pathways are incompletely understood. Interactions between circulating respiratory viruses (e.g., influenza) and cardiac conditions have been suggested as a cause of winter-dominant mortality patterns. Objective: In this paper we aim to quantify the total mortality burden of winter in the United States. Methods: We calculate 'pseudoseasonal' life expectancy, dividing the year into two six-month spans, one encompassing winter, the other summer. Results: During the summer when cold weather is absent and the circulation of respiratory viruses is significantly reduced, life expectancy is about one year longer. We also quantify the seasonal mortality difference in terms of seasonal 'equivalent ages' (defined herein) and proportional hazards. Contribution: We quantify the effects of winter mortality. The population-level mortality reduction of a perfect influenza vaccine (which can only reduce a portion of winter-attributable mortality) would be much more modest than is often recognized.

Keywords: influenza; life expectancy; seasonality; vaccinations; United States of America (search for similar items in EconPapers)
JEL-codes: J1 Z0 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:dem:demres:v:37:y:2017:i:45

DOI: 10.4054/DemRes.2017.37.45

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