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GBD regions and super regions
Super regions
The regions used in the Vision Atlas are based on the Global Burden of Disease (GBD) regional classification system.
GBD created super regions based on two criteria: epidemiological similarity and geographic closeness. For example, the High Income region covers a group of 34 countries in different parts of the world.
Regions
The seven Super Regions are further sub-divided into 21 GBD Regions.
