Table 1 Data Sources

COVID-19 Deaths

Johns Hopkins University the Center for Systems Science and Engineering (CSSE) Coronavirus Resource Center coronavirus.jhu.edu

Country level COVID-19 deaths up to May 8, 2020.

Age groups, sex, population sizes by age and sex

CIA World Factbookcia.gov/library/publications/the-world-factbook

Country-level population sizes (2020 est.) and demographic factors.

COVID-19 deaths by age and sex

info.gesundheitsministerium.at (AUT)

info-coronavirus.be (BEL)

covid.saude.gov.br (BRA)

wikipedia.org/wiki/COVID-19_pandemic_in_Canada (CAN)

qbitai.com/2020/02/11611.html (CHN)

statista.com/statistics/1110092/coronavirus-covid-19-deaths-age-group-switzerland/ (CH)

Robert Koch Institute (DEU)

mscbs.gob.es/profesionales/saludPublica/ccayes/alertasActual/nCov-China/documentos/Actualizacion_96_COVID-19.pdf (ESP)

santepubliquefrance.fr/maladies-et-traumatismes/maladies-et-infections-respiratoires/infection-a-coronavirus/documents/bulletin-national/covid-19-point-epidemiologique-du-15-mars-2020 (FRA)

statista.com/statistics/1105061/coronavirus-deaths-by-region-in-italy (ITA)

ncov.mohw.go.kr (KOR)

rivm.nl/coronavirus-covid-19/grafieken (NLD)

wikipedia.org/wiki/COVID-19_pandemic_in_Portugal (POR)

statista.com/statistics/1107913/number-of-coronavirus-deaths-in-sweden-by-age-groups (SWE)

www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/deaths/bulletins/deathsregisteredweeklyinenglandandwalesprovisional/weekending17april2020 (UK)

www.cdc.gov/nchs/nvss/vsrr/covid_weekly (USA)

Joint distributions for BEL, ESP, DEU, KOR, NLD, POR, UK; marginal distributions for others.