Top clinical trial participant countries 2015-2016, by number

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.

本统计数据显示了2015-2016年间根据临床试验参与者数量排名前20的国家。在此期间，美国拥有40,835名参与者，位居各国之首。