Table 2.

Sources of data and variables.

Name	Variable label	Conversion	Source
Country code	ISO 3166-1 alpha-3–three-letter country codes
Country name	Country name
MAGE	Median age of the population, UN projection for 2020		UN Population Division, World Population Prospects, 2017 Revision
A65	Share of the population that is 65 years and older, most recent year available		World Bank—World Development Indicators, based on age/sex distributions of United Nations Population Division's World Population Prospects: 2017 Revision
A70	Share of the population that is 70 years and older in 2015		United Nations, Department of Economic and Social Affairs, Population Division (2017), World Population Prospects: The 2017 Revision
GDPPC	Gross domestic product at purchasing power parity (constant 2011 international dollars), most recent year available		World Bank – World Development Indicators, source from World Bank, International Comparison Program database
TCPM	Total confirmed cases of COVID-19 per 1,000,000 people	Last available value	COVID-19 Data Repository by the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University
TDPM	Total deaths attributed to COVID-19 per 1,000,000 people	Last available value	COVID-19 Data Repository by the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University
TTPT	Total tests for COVID-19 per 1,000 people	Last available value	National government reports
SI	Government Response Stringency Index: composite measure based on 9 response indicators including school closures, workplace closures, and travel bans, rescaled to a value from 0 to 100 (100 = strictest response)	Average of available values	Oxford COVID-19 Government Response Tracker, Blavatnik School of Government
NCDD	Cause of death, by non-communicable diseases (% of total)		World Development Indicator (WDI)

Secondary source: Our World in Data and the World Development Indicator.

Our cutoff point for data is September 23, 2021, in the cross-section dimension.