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ClinicalTrials.gov currently lists 238,072 studies with locations in all 50 States and in 196 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 = 41,009 studies
(Data as of February 28, 2017)