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1680 Studies found for: sleep AND sleep duration

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Map Legend
Region Name Number of Studies
World 1,680
Africa [map] 9
Central America [map] 6
East Asia [map] 128
Japan 14 [studies]
Europe [map] 421
Middle East [map] 95
North America 809
Canada [map] 85 [studies]
Mexico 2 [studies]
United States [map] 733 [studies]
North Asia [map] 11
Pacifica [map] 28
South America [map] 43
South Asia [map] 12
Southeast Asia [map] 21

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