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58023 Studies found for: Placebo
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Map Legend
Region Name Number of Studies
World 58,023  
Africa   [map]   2,183  
Central America   [map]   1,035  
East Asia   [map]   6,685  
Japan 1,742   [studies]
Europe   [map]   17,244  
Middle East   [map]   2,962  
North America 28,318  
Canada   [map]   5,603   [studies]
Mexico 1,507   [studies]
United States   [map]   25,662   [studies]
North Asia   [map]   2,406  
Pacifica   [map]   2,634  
South America   [map]   3,016  
South Asia   [map]   1,315  
Southeast Asia   [map]   1,641  

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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.