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Is the Pain Visual Analogue Scale Linear and Responsive to Change? An Exploration Using Rasch Analysis
OBJECTIVES: Pain visual analogue scales (VAS) are commonly used in clinical trials and are often treated as an interval level scale without evidence that this is appropriate. This paper examines the internal construct validity and responsiveness of the pain VAS using Rasch analysis. METHODS: Patient...
| Autores principales: | , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
Public Library of Science
2014
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4055724/ https://www.ncbi.nlm.nih.gov/pubmed/24921952 http://dx.doi.org/10.1371/journal.pone.0099485 |