Chart · Our World in Data
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Number of clinical trials
Annual number of completed clinical trials registered in the ClinicalTrials.gov database for each country. Registration in the ClinicalTrials database in the is mandatory for trials in the United States, but voluntary for other countries.
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Data visualization loaded directly from Our World in Data.
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- Citation
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Exact citation
ClinicalTrials.gov (2025)
Attribution: NIH
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