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Availability of Clinical Trial Data From Industry-Sponsored Cardiovascular Trials.
- Source :
-
Journal of the American Heart Association [J Am Heart Assoc] 2016 Apr 20; Vol. 5 (4), pp. e003307. Date of Electronic Publication: 2016 Apr 20. - Publication Year :
- 2016
-
Abstract
- Background: Industry-sponsored clinical trials produce high-quality data sets that can be used by researchers to generate new knowledge. We assessed the availability of individual participant-level data (IPD) from large cardiovascular trials conducted by major pharmaceutical companies and compiled a list of available trials.<br />Methods and Results: We identified all randomized cardiovascular interventional trials registered on ClinicalTrials.gov with >5000 enrollment, sponsored by 1 of the top 20 pharmaceutical companies by 2014 global sales. Availability of IPD for each trial was ascertained by searching each company's website/data-sharing portal. If availability could not be determined, each company was contacted electronically. Of 60 included trials, IPD are available for 15 trials (25%) consisting of 204 452 patients. IPD are unavailable for 15 trials (25%). Reasons for unavailability were: cosponsor did not agree to make IPD available (4 trials) and trials were not conducted within a specific time (5 trials); for the remaining 6 trials, no specific reason was provided. For 30 trials (50%), availability of IPD could not be definitively determined either because of no response or requirements for a full proposal (23 trials).<br />Conclusions: IPD from 1 in 4 large cardiovascular trials conducted by major pharmaceutical companies are confirmed available to researchers for secondary research, a valuable opportunity to enhance science. However, IPD from 1 in 4 trials are not available, and data availability could not be definitively determined for half of our sample. For several of these trials, companies require a full proposal to determine availability, making use of the IPD by researchers less certain.<br /> (© 2016 The Authors. Published on behalf of the American Heart Association, Inc., by Wiley Blackwell.)
Details
- Language :
- English
- ISSN :
- 2047-9980
- Volume :
- 5
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Journal of the American Heart Association
- Publication Type :
- Academic Journal
- Accession number :
- 27098969
- Full Text :
- https://doi.org/10.1161/JAHA.116.003307