Results are required to be submitted only for certain studies. For example, results submission is generally not required for observational studies; trials completed before 2008; and trials that include drug, biological, or device products not previously approved by the U.S. FDA for any use (if the Primary Completion Date is before January 18, 2017).
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Percent of clinical studies with posted results worldwide by type 2025
This statistic shows the percentage of clinical studies with posted results worldwide by type, as of June 13, 2025. Some 94 percent of studies with posted results were interventional types.
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ClinicalTrials.gov. (June 16, 2025). Percentage of clinical studies with posted results worldwide by type as of June 2025 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 27, 2026, from /statistics/732996/clinical-studies-worldwide-with-posted-results-by-type/
ClinicalTrials.gov. "Percentage of clinical studies with posted results worldwide by type as of June 2025." Chart. June 16, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 27, 2026. /statistics/732996/clinical-studies-worldwide-with-posted-results-by-type/
ClinicalTrials.gov. (2025). Percentage of clinical studies with posted results worldwide by type as of June 2025. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 27, 2026. /statistics/732996/clinical-studies-worldwide-with-posted-results-by-type/
ClinicalTrials.gov. "Percentage of Clinical Studies with Posted Results Worldwide by Type as of June 2025." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 16 Jun 2025, /statistics/732996/clinical-studies-worldwide-with-posted-results-by-type/
ClinicalTrials.gov, Percentage of clinical studies with posted results worldwide by type as of June 2025 ÌÇÐÄÆƽâ°æ, /statistics/732996/clinical-studies-worldwide-with-posted-results-by-type/ (last visited July 27, 2026)
Percentage of clinical studies with posted results worldwide by type as of June 2025 [Graph], ClinicalTrials.gov, June 16, 2025. [Online]. Available: /statistics/732996/clinical-studies-worldwide-with-posted-results-by-type/
