Two to five repeated measurements per patient reduced the required sample size considerably in a randomized clinical trial for patients with inflammatory rheumatic diseases

BACKGROUND: Patient reported outcomes are accepted as important outcome measures in rheumatology. The fluctuating symptoms in patients with rheumatic diseases have serious implications for sample size in clinical trials. We estimated the effects of measuring the outcome 1-5 times on the sample size...

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Autores principales: Smedslund, Geir, Zangi, Heidi Andersen, Mowinckel, Petter, Hagen, Kåre Birger
Formato: Artigo
Lenguaje:Inglês
Publicado: BioMed Central 2013
Materias:
Short Report
Acceso en línea:https://ncbi.nlm.nih.gov/pmc/articles/PMC3571945/
https://ncbi.nlm.nih.gov/pubmed/23374902
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1186/1756-0500-6-37
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