Table 1.
Overview of variables and their definitions.
| Factor | Variables | Explanation |
|---|---|---|
| The COVID-19 situation | The cumulative NCCC | The cumulative number of COVID-19 confirmed cases in a country or region as of 30 June 2020. |
| The weekly NCCC | The number of COVID-19 confirmed cases in a country or region in a week. | |
| Population and economic parameters | Population | Population in 2019 counts all residents. |
| GDP-per-capita | It is calculated by dividing the GDP of a country by its population in 2019. | |
| Population mobility and international travelers | International-migrants | The number of people born in other countries in 2015. |
| Air-passenger-volume | Passenger number of domestic and international flights operated by air carriers registered in 2018. | |
| Urban characteristics | Urban population | People living in urban areas in 2019. |
| Urbanization proportion | Urban population percentage in 2019. | |
| Agglomerations population proportion | The proportion of population living in metropolitan areas (more than one million people) in 2019. | |
| Slums population proportion | The proportion of the urban population living in slum households in 2018. | |
| Urban primacy index | The percentage of a country's urban population living in that largest metropolitan in 2019. | |
| Largest urban population | Population in the largest city in a country or region. | |
| Venue control | School-closures | 1-no require; 2- recommend; 3-require sometimes; 4-must |
| Workplace-closures | 1-no require; 2-recommend; 3-require in some category workplace; 4-require except for some essential workplaces | |
| Gathering control | Public-gathering-restrictions | 1-no restrictions; 2-restrictions on above 1000 people gatherings; 3-restrictions between 100 and 1000 people; 4-restrictions between 10 and 100 people; 5-ban |
| Public-events-restrictions | 1-no restrictions; 2-recommend cancelling; 3-require cancelling | |
| Paths-transport control | International-travel-restrictions | 1-no restrictions; 2-screening; 3-isolate arrivals from high-risk cities or regions; 4-ban on arrivals from some cities or regions; 5-ban on all regions |
| Internal-movement-restrictions | 1-no restrictions; 2-recommend not travel in some cities; 3-restrictions in some cities or regions | |
| Public-transport-restrictions | 1-no restrictions; 2-recommend closing; 3-require closing |