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Grey Literature in the Health Sciences: Clinical Trials

Provides resources and strategies for finding and using grey literature in health science research.

Why Search for Clinical Trial Results?

 

1. From the Plain Language Summary of: Scherer RW, Langenberg P, von Elm E. Full publication of results initially presented in abstracts. Cochrane Database of Systematic Reviews 2007, Issue 2. Art. No.: MR000005. DOI: 10.1002/14651858.MR000005.pub3.

2. Hartung DM, Zarin DA, Guise JM, McDonagh M, Paynter R, Helfand M. Reporting discrepancies between the ClinicalTrials.gov results database and peer-reviewed publications. Ann Intern Med. 2014;160(7):477-83.

3. Tang E, Ravaud P, Riveros C, Perrodeau E, Dechartres A. Comparison of serious adverse events posted at ClinicalTrials.gov and published in corresponding journal articles. BMC Med. 2015;13:189. Read article

4. Chen R, Desai NR, Ross JS, Zhang W, Chau KH, Wayda B, et al. Publication and reporting of clinical trial results: cross sectional analysis across academic medical centers. BMJ. 2016;352:i637. Read article

Clinical Trial Registries

Information on clinical trials can be found in clinical trials registers.  Study results are also often found in clinical trials registers but may also be located in separate databases.

Places to Find Study Results

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