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ClinicalTrials.gov
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15644 Studies found for: subjects AND Double-blind

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Map Legend
Source:https://ClinicalTrials.gov
Region Name Number of Studies
World 15,644
Africa [map] 637
Central America [map] 462
East Asia [map] 2,380
Japan 782 [studies]
Europe [map] 5,100
Middle East [map] 923
North America 8,725
Canada [map] 2,067 [studies]
Mexico 696 [studies]
United States [map] 8,212 [studies]
North Asia [map] 1,225
Pacifica [map] 1,265
South America [map] 1,049
South Asia [map] 435
Southeast Asia [map] 609
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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.