Item Reduction of the Voice Handicap Index Based on the Original Version and on European Translations
| Autor: | E. B. Holmberg, M. De Bodt, Clark A. Rosen, I.M. Verdonck de Leeuw, Virginie Woisard, T. Nawka, R. Whurr, Isabel Guimarães, U. Konerding, Antonio Schindler |
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| Rok vydání: | 2009 |
| Předmět: |
Voice Handicap Index
Adult Male Linguistics and Language International short-scale Multivariate analysis Adolescent Speech recognition Severity of Illness Index Language and Linguistics Young Adult Speech and Hearing Cronbach's alpha Surveys and Questionnaires Statistics Humans Narrow range Child Aged Aged 80 and over Voice Disorders Reproducibility of Results Middle Aged Translating Item reduction LPN and LVN Multivariate Analysis Linear Models Female Human medicine Factor analysis Factor Analysis Statistical Psychology |
| Zdroj: | Folia phoniatrica et logopaedica |
| ISSN: | 1421-9972 1021-7762 |
| Popis: | Objective: Constructing an internationally applicable short-scale of the Voice Handicap Index (VHI). Methods: Subjects were 1,052 patients with 5 different types of voice disorder groups from Belgium, France, Sweden, Germany, Italy, The Netherlands, Portugal, and the USA. Different 9- and 12-item subsets were selected from the 30 VHI items using (1) the first factor of an unrotated factor analysis (narrow range subsets) and (2) the first three factors after promax rotation (broad range subsets). Country-specific subsets were selected to test deviations from the international subsets. For all subsets, reliability was investigated using Cronbach’s alphas and correlations with the total VHI. Validity was investigated using regression on voice disorder groups. All analyses were performed for the total and for all country-specific subject samples. Results: Reliability was high for all item subsets. It was lower for the international compared to the country-specific subsets and for the broad range compared to the narrow range subsets. Validity was best for the broad range subsets. Validity was better for the international than for the country-specific subsets. For all statistics the 12-item subsets were not essentially better than the 9-item subsets. Conclusion: The international broad range 9-item subset forms a scale which approximates well the total VHI. |
| Databáze: | OpenAIRE |
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