Try our beta test site
IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more...

See Studies on Map

Map of All Studies on

Click on the map below to show a more detailed map (when available) or to search for studies (when a map is not available).
Map Legend

Region Name   Number of Studies
World   242,966  
Africa   5,928  
Central America   2,505  
East Asia   24,754  
Japan   4,536  
Europe   68,478  
Middle East   9,807  
North America   112,215  
Canada   16,787  
Greenland   1  
Mexico   2,772  
United States   101,382  
North Asia   4,290  
Pacifica   6,053  
South America   8,029  
South Asia   3,719  
Southeast Asia   4,890  

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

Click on a [study count] link to see a list of studies in that region. Click on the Back button to return to this list and see studies in another region.

Studies with no locations are not included in the study counts or on the maps.

Studies with multiple locations are included in each region where the study has locations.

This page last reviewed in October 2015