Extent of non-publication in cohorts of studies approved by research ethics committees or included in trial registries.
BACKGROUND: The synthesis of published research in systematic reviews is essential when providing evidence to inform clinical and health policy decision-making. However, the validity of systematic reviews is threatened if journal publications represent a biased selection of all studies that have bee...
محفوظ في:
| المؤلفون الرئيسيون: | , , , , , , , , , , , |
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| التنسيق: | Artigo |
| اللغة: | Inglês |
| منشور في: |
Public Library of Science (PLoS)
2014-01-01
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| سلاسل: | PLoS ONE |
| الوصول للمادة أونلاين: | http://europepmc.org/articles/PMC4275183?pdf=render |
| الوسوم: |
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