Re-evaluating a vision-related quality of life questionnaire with item response theory (IRT) and differential item functioning (DIF) analyses

BACKGROUND: For the Low Vision Quality Of Life questionnaire (LVQOL) it is unknown whether the psychometric properties are satisfactory when an item response theory (IRT) perspective is considered. This study evaluates some essential psychometric properties of the LVQOL questionnaire in an IRT model...

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Bibliografske podrobnosti
Main Authors: van Nispen, Ruth MA, Knol, Dirk L, Langelaan, Maaike, van Rens, Ger HMB
Format: Artigo
Jezik:Inglês
Izdano: BioMed Central 2011
Teme:
Research Article
Online dostop:https://ncbi.nlm.nih.gov/pmc/articles/PMC3201037/
https://ncbi.nlm.nih.gov/pubmed/21888648
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1186/1471-2288-11-125
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