| Indicator | Definition |
| Case fatality rate | The proportion of deaths among the confirmed COVID-19 cases in a country or region, which is used to reflect the healthcare level of that country or region. A higher value indicates a lower healthcare level. |
| Population density of confirmed cases | The number of confirmed cases per square kilometer in a country or region, calculated using the land area while excluding the area covered by the sea. |
| Cases per million people | The proportion of confirmed cases per million population in a country or region. |