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ClinicalTrials.gov
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14572 Studies found for: subjects AND Double-blind AND Phase

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Map Legend
Source:https://ClinicalTrials.gov
Region Name Number of Studies
World 14,572
Africa [map] 636
Central America [map] 462
East Asia [map] 2,361
Japan 794 [studies]
Europe [map] 4,771
Middle East [map] 894
North America 8,352
Canada [map] 2,048 [studies]
Mexico 701 [studies]
United States [map] 7,886 [studies]
North Asia [map] 1,257
Pacifica [map] 1,301
South America [map] 1,030
South Asia [map] 419
Southeast Asia [map] 606
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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.