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155502 Studies found for: Participants | Interventional Studies
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Map Legend
Region Name Number of Studies
World 155,502
Africa [map] 6,206
Central America [map] 2,002
East Asia [map] 18,959
Japan 3,783 [studies]
Europe [map] 39,748
Middle East [map] 7,917
North America 75,481
Canada [map] 12,903 [studies]
Mexico 2,784 [studies]
United States [map] 67,585 [studies]
North Asia [map] 4,554
Pacifica [map] 5,627
South America [map] 6,776
South Asia [map] 3,183
Southeast Asia [map] 4,213

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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.