The Nikkei Asia Recovery Index sources their data from Our World in Data, Google COVID-19 Community Mobility Reports, Oxford COVID-19 Government Response Tracker by Blavatnik School of Government, University of Oxford, Cirium, an aviation data and analytics company and Orbital Insight, which analyses satellite data.
Also, it is crucial to note that in the index, countries and regions are compared with one another for most of the subcategories. Therefore, for instance, in the share of people who have received at least one dose subcategory, if a country’s percentage is higher than 90% of all other counties, it gets a 10, if it is 80% higher than all other countries, it gets a score of 9, and so on.