Quantification of Errors in Ordinal Outcome Scales Using Shannon Entropy: Effect on Sample Size Calculations

OBJECTIVE: Clinical trial outcomes often involve an ordinal scale of subjective functional assessments but the optimal way to quantify results is not clear. In stroke, the most commonly used scale, the modified Rankin Score (mRS), a range of scores (“Shift”) is proposed as superior to dichotomizatio...

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Detalles Bibliográficos
Autores principales: Mandava, Pitchaiah, Krumpelman, Chase S., Shah, Jharna N., White, Donna L., Kent, Thomas A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2013
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3702531/
https://www.ncbi.nlm.nih.gov/pubmed/23861800
http://dx.doi.org/10.1371/journal.pone.0067754

Internet

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3702531/
https://www.ncbi.nlm.nih.gov/pubmed/23861800
http://dx.doi.org/10.1371/journal.pone.0067754

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