Statistical power of MRI monitored trials in multiple sclerosis: new data and comparison with previous results

OBJECTIVES—To evaluate the durations of the follow up and the reference population sizes needed to achieve optimal and stable statistical powers for two period cross over and parallel group design clinical trials in multiple sclerosis, when using the numbers of new enhancing lesions and the numbers...

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Hlavní autoři: Sormani, M, Molyneux, P, Gasperini, C, Barkhof, F, Yousry, T, Miller, D, Filippi, M
Médium: Artigo
Jazyk:Inglês
Vydáno: BMJ Group 1999
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On-line přístup:https://ncbi.nlm.nih.gov/pmc/articles/PMC1736308/
https://ncbi.nlm.nih.gov/pubmed/10201417
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