Registered clinical studies with posted results worldwide number 2008-2023

Worldwide, the total number of clinical studies with posted results was 1,139 at year-end 2009 and increased up to more than 58 thousand by the end of May 2023. This statistic shows the total number of registered clinical studies with posted results worldwide since 2008.

Total number of registered clinical studies with posted results worldwide since 2008 (as of May 2023)

Characteristic	Number of registered studies with posted results
2008	41
2009	1,139
2010	2,756
2011	4,956
2012	7,760
2013	10,853
2014	15,680
2015	19,481
2016	23,666
2017	29,493
2018	34,152
2019	40,675
2020	46,718
2021	52,537
2022	56,561
2023 (as of May 29)	58,472

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Release date

May 2023

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Region

Worldwide

Survey time period

as of May 29, 2023

Supplementary notes

Registered studies with results posted on ClinicalTrials.gov. until end of each year. ClinicalTrials.gov launched its results database in September 2008, at which time sponsors or investigators were allowed to begin submitting results for their registered studies. The results database was developed to accommodate the results submission requirements outlined in FDAAA.

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