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Healthy Skepticism Library item: 19735

Warning: This library includes all items relevant to health product marketing that we are aware of regardless of quality. Often we do not agree with all or part of the contents.


Publication type: Journal Article

Dal-Ré R, Moher D, Gluud C, Treweek S, Demotes-Mainard J, Carné X
Disclosure of Investigators' Recruitment Performance in Multicenter Clinical Trials: A Further Step for Research Transparency
PLoS Med 2011 Dec 27; 8:(12):


Summary Points
Many clinical trials are terminated before reaching the sample size needed to test the trials’ hypotheses owing to poor recruitment.
Registries, such as, provide information on the main features of a multicenter clinical trial (MCT) to the general public.
Site investigators are key to the success of MCTs; however, information on their recruitment performance is not publicly available.
We propose that sponsors should disclose the recruitment targets of all site investigators on before a trial starts as well as their final recruitment. Information on issues that could have affected recruitment should also be provided.
This information will be of interest to different stakeholders such as patient organizations, sponsors, and MCT networks.
Disclosing all site investigators’ recruitment figures could prompt queries to the sponsor from the scientific community about regional subgroup analyses, to assess if ethnic or standard-of-care differences have an impact on treatment outcomes.


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