This statistic shows the top 20 countries based on number of clinical trial participants in 2015-2016. In this period, the United States had 40,835 participants which was the largest number amongst all the other countries.
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Food and Drug Administration. (July 26, 2017). Top 20 countries by number of clinical trial participants in 2015-2016 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 31, 2026, from /statistics/830020/top-participant-countries-for-clinical-trials-worldwide-by-number/
Food and Drug Administration. "Top 20 countries by number of clinical trial participants in 2015-2016." Chart. July 26, 2017. ÌÇÐÄÆƽâ°æ. Accessed July 31, 2026. /statistics/830020/top-participant-countries-for-clinical-trials-worldwide-by-number/
Food and Drug Administration. (2017). Top 20 countries by number of clinical trial participants in 2015-2016. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 31, 2026. /statistics/830020/top-participant-countries-for-clinical-trials-worldwide-by-number/
Food and Drug Administration. "Top 20 Countries by Number of Clinical Trial Participants in 2015-2016." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 26 Jul 2017, /statistics/830020/top-participant-countries-for-clinical-trials-worldwide-by-number/
Food and Drug Administration, Top 20 countries by number of clinical trial participants in 2015-2016 ÌÇÐÄÆƽâ°æ, /statistics/830020/top-participant-countries-for-clinical-trials-worldwide-by-number/ (last visited July 31, 2026)
Top 20 countries by number of clinical trial participants in 2015-2016 [Graph], Food and Drug Administration, July 26, 2017. [Online]. Available: /statistics/830020/top-participant-countries-for-clinical-trials-worldwide-by-number/
