The number of registered clinical studies in non-U.S. areas was more than 320,000 as of January 2026. Meanwhile, in the U.S., the number was around 163,000 for the same period.
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ClinicalTrials.gov. (January 21, 2026). Number of registered clinical studies worldwide by location as of January 2026 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 15, 2026, from /statistics/732954/global-clinical-registered-studies-by-location/
ClinicalTrials.gov. "Number of registered clinical studies worldwide by location as of January 2026." Chart. January 21, 2026. ÌÇÐÄÆƽâ°æ. Accessed July 15, 2026. /statistics/732954/global-clinical-registered-studies-by-location/
ClinicalTrials.gov. (2026). Number of registered clinical studies worldwide by location as of January 2026. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 15, 2026. /statistics/732954/global-clinical-registered-studies-by-location/
ClinicalTrials.gov. "Number of Registered Clinical Studies Worldwide by Location as of January 2026." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 21 Jan 2026, /statistics/732954/global-clinical-registered-studies-by-location/
ClinicalTrials.gov, Number of registered clinical studies worldwide by location as of January 2026 ÌÇÐÄÆƽâ°æ, /statistics/732954/global-clinical-registered-studies-by-location/ (last visited July 15, 2026)
Number of registered clinical studies worldwide by location as of January 2026 [Graph], ClinicalTrials.gov, January 21, 2026. [Online]. Available: /statistics/732954/global-clinical-registered-studies-by-location/
