This statistic shows the number of clinical trial participants in the U.S. compared to the rest of the world in 2015-2019, by age group. In the oncology and hematology area, the number of seniors and non-seniors was almost even, between 17 and 18 thousand.
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ÌÇÐÄÆƽâ°æ. (February 4, 2021). Number of clinical trial participants in the U.S. and rest of the world in 2015-2019, by age group (in 1,000s) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved August 02, 2026, from /statistics/1199979/participants-clinical-trials-by-age-in-us-and-rest-of-world/
ÌÇÐÄÆƽâ°æ. "Number of clinical trial participants in the U.S. and rest of the world in 2015-2019, by age group (in 1,000s)." Chart. February 4, 2021. ÌÇÐÄÆƽâ°æ. Accessed August 02, 2026. /statistics/1199979/participants-clinical-trials-by-age-in-us-and-rest-of-world/
ÌÇÐÄÆƽâ°æ. (2021). Number of clinical trial participants in the U.S. and rest of the world in 2015-2019, by age group (in 1,000s). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: August 02, 2026. /statistics/1199979/participants-clinical-trials-by-age-in-us-and-rest-of-world/
ÌÇÐÄÆƽâ°æ. "Number of Clinical Trial Participants in The U.S. and Rest of The World in 2015-2019, by Age Group (in 1,000s)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 4 Feb 2021, /statistics/1199979/participants-clinical-trials-by-age-in-us-and-rest-of-world/
ÌÇÐÄÆƽâ°æ, Number of clinical trial participants in the U.S. and rest of the world in 2015-2019, by age group (in 1,000s) ÌÇÐÄÆƽâ°æ, /statistics/1199979/participants-clinical-trials-by-age-in-us-and-rest-of-world/ (last visited August 02, 2026)
Number of clinical trial participants in the U.S. and rest of the world in 2015-2019, by age group (in 1,000s) [Graph], ÌÇÐÄÆƽâ°æ, February 4, 2021. [Online]. Available: /statistics/1199979/participants-clinical-trials-by-age-in-us-and-rest-of-world/
