* Terminated trials were excluded from the
analysis. Trials not industry sponsored and device trials were excluded.
** Phase II includes Phases I/II, II, IIa, IIb. Phase III includes Phase II/III and III.
*** Final number to be determined in 2021.
Citation formats
Average number of site per drug trial started worldwide 2015-2020, by phase
Between 2019 and the end of 2020, there was a 40 percent decrease in the average number of sites per clinical drug trial worldwide. This statistic shows the average number of sites per clinical drug trial started worldwide from 2015 to 2020, by trial phase.
Profit from the additional features of your individual account
Currently, you are using a shared account. To use individual functions (e.g., mark statistics as favourites, set
statistic alerts) please log in with your personal account.
If you are an admin, please authenticate by logging in again.
Learn more about how ÌÇÐÄÆƽâ°æ can support your business.
IQVIA. (February 22, 2021). Average number of sites per clinical trial started worldwide from 2015 to 2020, by trial phase [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 26, 2026, from /statistics/1249066/average-number-sites-per-drug-trial-started-by-phase-worldwide/
IQVIA. "Average number of sites per clinical trial started worldwide from 2015 to 2020, by trial phase." Chart. February 22, 2021. ÌÇÐÄÆƽâ°æ. Accessed July 26, 2026. /statistics/1249066/average-number-sites-per-drug-trial-started-by-phase-worldwide/
IQVIA. (2021). Average number of sites per clinical trial started worldwide from 2015 to 2020, by trial phase. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 26, 2026. /statistics/1249066/average-number-sites-per-drug-trial-started-by-phase-worldwide/
IQVIA. "Average Number of Sites per Clinical Trial Started Worldwide from 2015 to 2020, by Trial Phase." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 22 Feb 2021, /statistics/1249066/average-number-sites-per-drug-trial-started-by-phase-worldwide/
IQVIA, Average number of sites per clinical trial started worldwide from 2015 to 2020, by trial phase ÌÇÐÄÆƽâ°æ, /statistics/1249066/average-number-sites-per-drug-trial-started-by-phase-worldwide/ (last visited July 26, 2026)
Average number of sites per clinical trial started worldwide from 2015 to 2020, by trial phase [Graph], IQVIA, February 22, 2021. [Online]. Available: /statistics/1249066/average-number-sites-per-drug-trial-started-by-phase-worldwide/
