Critical Care

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The added value of ordinal analysis in clinical trials: an example in traumatic brain injury

Bob Roozenbeek*, Hester F Lingsma, Pablo Perel, Phil Edwards, Ian Roberts, Gordon D Murray, Andrew IR Maas, Ewout W Steyerberg and the IMPACT (International Mission on Prognosis and Clinical Trial Design in Traumatic Brain Injury) Study Group and the CRASH (Corticosteroid Randomisation After Significant Head Injury) Trial Collaborators

Critical Care 2011, 15:R127 doi:10.1186/cc10240

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Brain injury clinical trials: new agents or new statistics?

Joshua Z Willey, Stephan A Mayer Critical Care 2011, 15:188 (19 September 2011)