Evidence for risk of bias in cluster randomised trials: review of recent trials published in three general medical journals
AUTOR(ES)
Puffer, Suezann
FONTE
BMJ Publishing Group Ltd.
RESUMO
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.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=214092Documentos Relacionados
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