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Questionnaire discrimination: (re)-introducing coefficient δ
BACKGROUND: Questionnaires are used routinely in clinical research to measure health status and quality of life. Questionnaire measurements are traditionally formally assessed by indices of reliability (the degree of measurement error) and validity (the extent to which the questionnaire measures wha...
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| Formato: | Texto |
| Lenguaje: | English |
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BioMed Central
2007
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1884165/ https://www.ncbi.nlm.nih.gov/pubmed/17511862 http://dx.doi.org/10.1186/1471-2288-7-19 |