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ClinicalTrials.gov currently lists 237,300 studies with locations in all 50 States and in 195 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 (39%)
color Both U.S. and non-U.S. (5%)
Total N = 41,054 studies
(Data as of February 19, 2017)