Development of the 25-item Cardiff Visual Ability Questionnaire for Children (CVAQC)
| Autor: | Helen Court, Thomas Hengist Margrain, Barbara Ryan, Jyoti Khadka, J. Margaret Woodhouse |
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| Přispěvatelé: | Khadka, Jyoti, Ryan, Barbara, Margrain, Tom H, Court, Helen, Woodhouse, J Margaret |
| Rok vydání: | 2010 |
| Předmět: |
Male
Activities of daily living Adolescent Psychometrics Intraclass correlation Visual impairment Visual Acuity Vision Low Validity Disability Evaluation Cellular and Molecular Neuroscience children Surveys and Questionnaires Activities of Daily Living vision impairment Humans Medicine Child Rasch model business.industry Rasch analysis Focus group Sensory Systems Ophthalmology visual ability Child Preschool Scale (social sciences) RE Female Cardiff Visual Ability Questionnaire for Children self-reporting medicine.symptom Epidemiologic Methods business Attitude to Health Visually Impaired Persons Clinical psychology |
| Zdroj: | British Journal of Ophthalmology. 94:730-735 |
| ISSN: | 0007-1161 |
| Popis: | Aims: To develop and validate a short questionnaire to assess self-reported visual ability in children and young people with a visual impairment. Methods: A list of 121 items was generated from 13 focus groups with children and young people with and without a visual impairment. A long 89-item questionnaire was piloted with 45 visually impaired children and young people using face-to-face interviews. Rasch analysis was used to analyse the response category function and to facilitate item removal ensuring a valid unidimensional scale. The validity and reliability of the short questionnaire were assessed on a group of 109 visually impaired children (58.7% boys; median age 13 years) using Rasch analysis and intraclass correlation coefficient (ICC). Results: The final 25-item questionnaire has good validity and reliability as demonstrated by a person separation index of 2.28 and reliability coefficient of 0.84. The items are well targeted to the subjects with a mean difference of −0.40 logit between item and person means, and an ICC of 0.89 demonstrates good temporal stability. Conclusion: The Cardiff Visual Ability Questionnaire for Children (CVAQC) is a short, psychometrically robust and a self-reported instrument that works to form a unidimensional scale for the assessment of the visual ability in children and young people with a visual impairment. Refereed/Peer-reviewed |
| Databáze: | OpenAIRE |
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