Statistics on Clinical Trial recruitment

According to CenterWatch, 81% of clinical trials are delayed due to inadequate participant recruitment.
50% of clinical research sites enroll one or no patients, according to the Center for Information and Study on Clinical Research Participation (CISCRP).
The American Cancer Society reports that less than 5% of adult cancer patients participate in trials.
In 2015, the Clinical Trials Transformation Initiative analy z ed the recruitment performance of registered trials. It discovered that 19% of trials were either cancelled or discontinued due to low enrolment, and almost 9 out of 10 failed to achieve their recruitment targets within their deadlines.