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ClinicalTrials.gov currently lists 242,698 studies with locations in all 50 States and in 198 countries.

Locations of Recruiting Studies

Recruiting Study Location Count Pie Chart
Legend for Recruiting Study location pie chart image
Pie Color Location
color Non-U.S. only (56%)
color U.S. only (38%)
color Both U.S. and non-U.S. (5%)
Total N = 42,175 studies
(Data as of April 24, 2017)