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Evidence for risk of bias in cluster randomised trials: review of recent trials published in three general medical journals
Objective To examine the prevalence of a risk of bias associated with the design and conduct of cluster randomised controlled trials among a sample of recently published studies. Design Retrospective review of cluster randomised trials published in the BMJ, Lancet, and New England Journal of Medicin...
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| Main Authors: | , , |
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| Format: | Artigo |
| Sprog: | Inglês |
| Udgivet: |
BMJ Publishing Group Ltd.
2003
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| Fag: | |
| Online adgang: | https://ncbi.nlm.nih.gov/pmc/articles/PMC214092/ https://ncbi.nlm.nih.gov/pubmed/14525877 |
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