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Do protocols for new randomised trials take previous similar trials into account? Cohort study of contemporary trial protocols
OBJECTIVE: To investigate to what extent evidence from previous similar trials or systematic reviews was considered before conducting new trials. DESIGN: Cohort study of contemporary protocols for trials with ethical approval. METHODS: All protocols for randomised trials approved by the five ethical...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BMJ Publishing Group
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6858261/ https://www.ncbi.nlm.nih.gov/pubmed/31712328 http://dx.doi.org/10.1136/bmjopen-2018-026661 |