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96425 Studies found for: observational study

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Map Legend
Region Name Number of Studies
World 96,425
Africa [map] 3,000
Central America [map] 461
East Asia [map] 11,346
Japan 944 [studies]
Europe [map] 33,046
Middle East [map] 5,431
North America 29,547
Canada [map] 3,703 [studies]
Greenland 1 [studies]
Mexico 488 [studies]
United States [map] 26,443 [studies]
North Asia [map] 830
Pacifica [map] 901
South America [map] 1,800
South Asia [map] 1,136
Southeast Asia [map] 1,489

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Studies with no locations are not included in the counts or on the map.

Studies with multiple locations are included in each region containing locations.