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ClinicalTrials.gov
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15739 Studies found for: subjects AND Double-blind AND Clinical Research

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Map Legend
Source:https://ClinicalTrials.gov
Region Name Number of Studies
World 15,739
Africa [map] 645
Central America [map] 461
East Asia [map] 2,420
Japan 811 [studies]
Europe [map] 5,131
Middle East [map] 952
North America 8,835
Canada [map] 2,099 [studies]
Mexico 698 [studies]
United States [map] 8,325 [studies]
North Asia [map] 1,257
Pacifica [map] 1,305
South America [map] 1,073
South Asia [map] 444
Southeast Asia [map] 627
Hints:

Click on a [map] link to show a map of that region.

Click on a [studies] link to search within your current results for studies in that region. Use the back button to return to this list and try another region.

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.