Prevalence of primary outcome changes in clinical trials registered on ClinicalTrials.gov: a cross-sectional study [v1; ref status: indexed, http://f1000r.es/34l]
Background: An important principle in the good conduct of clinical trials is that a summary of the trial protocol, with a pre-defined primary outcome, should be freely available before the study commences. The clinical trials registry ClinicalTrials.gov provides one method of doing this, and once th...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
F1000 Research Ltd
2014-03-01
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| Series: | F1000Research |
| Subjects: | |
| Online Access: | http://f1000research.com/articles/3-77/v1 |