News

COVID-19 life expectancy losses biggest since Second World War

29 Sep 21

COVID-19 life expectancy losses biggest since Second World War

Nuffield Fellows Ridhi Kashyap and José Manuel Aburto find that COVID-19 caused the biggest decrease in life expectancy since World War II.

The COVID-19 pandemic triggered life expectancy losses not seen since the Second World War in Western Europe, and exceeded those observed around the dissolution of the Eastern Bloc in central and Eastern European countries, according to research published by Nuffield Fellows Ridhi Kashyap and José Manuel Aburto with their colleagues at the Leverhulme Centre for Demographic Science.

The research team assembled an unprecedented dataset on mortality from 29 countries, spanning most of Europe, the US, and Chile – countries for which official death registrations for 2020 had been published. They found that 27 of the 29 countries saw reductions in life expectancy in 2020, and at a scale that wiped out years of progress on mortality, according to the paper published in the International Journal of Epidemiology.

Women in 15 countries and men in ten countries were found to have a lower expectancy at birth in 2020 than in 2015, a year in which life expectancy was already negatively affected by a significant flu season. According to José, "For Western European countries such as Spain, England and Wales, Italy, Belgium, among others, the last time such large magnitudes of declines in life expectancy at birth were observed in a single year was during WW-II."

But, he says, the scale of the life expectancy losses was stark across most countries studied, "Twenty-two countries included in our study experienced larger losses than half a year in 2020. Females in eight countries and males in 11 countries experienced losses larger than a year. To contextualize, it took on average 5.6 years for these countries to achieve a one-year increase in life expectancy recently: progress wiped out over the course of 2020 by COVID-19."

Across most of the 29 countries, males saw larger life expectancy declines than females. The largest declines in life expectancy were observed among males in the US, who saw a decline of 2.2 years relative to 2019 levels, followed by Lithuanian males (1.7 years).

According to co-lead author, Ridhi, "The large declines in life expectancy observed in the US can partly be explained by the notable increase in mortality at working ages observed in 2020. In the US, increases in mortality in the under 60 age group contributed most significantly to life expectancy declines, whereas across most of Europe increases in mortality above age 60 contributed more significantly."

In addition to these age patterns, the team’s analysis reveals that most life expectancy reductions across different countries were attributable to official COVID-19 deaths.

Ridhi adds, "While we know that there are several issues linked to the counting of COVID-19 deaths, such as inadequate testing or misclassification, the fact that our results highlight such a large impact that is directly attributable to COVID-19 shows how devastating a shock it has been for many countries. We urgently call for the publication and availability of more disaggregated data from a wider-range of countries, including low- and middle-income countries, to better understand the impacts of the pandemic globally."

Life expectancy, also known as period life expectancy, refers to the average age to which a newborn live if current death rates continued for their whole life. It does not predict an actual lifespan. It provides a snapshot of current mortality conditions and allows for a comparison of the size of the mortality impacts of the pandemic between different countries and populations.

This news story was originally published on the University of Oxford's news pages. Interactive visualizations of the paper’s main results/findings, such as the graph shown above, can be found at covid19.demographicscience.ox.ac.uk/lifeexpectancy.