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Augmenting the logrank test in the design of clinical trials in which non-proportional hazards of the treatment effect may be anticipated

BACKGROUND: Most randomized controlled trials with a time-to-event outcome are designed assuming proportional hazards (PH) of the treatment effect. The sample size calculation is based on a logrank test. However, non-proportional hazards are increasingly common. At analysis, the estimated hazards ra...

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Detalhes bibliográficos
Publicado no:BMC Med Res Methodol
Main Authors: Royston, Patrick, Parmar, Mahesh K.B.
Formato: Artigo
Idioma:Inglês
Publicado em: BioMed Central 2016
Assuntos:
Acesso em linha:https://ncbi.nlm.nih.gov/pmc/articles/PMC4751641/
https://ncbi.nlm.nih.gov/pubmed/26869168
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1186/s12874-016-0110-x
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