Development of the 25-item Cardiff Visual Ability Questionnaire for Children (CVAQC)
Development of the 25-item Cardiff Visual Ability Questionnaire for Children (CVAQC)
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DOI：
10.1136/bjo.2009.171181
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发表时间：
2010-06-01
影响因子：
4.1
通讯作者：
Woodhouse, J. Margaret
中科院分区：
文献类型：
--
作者：
Khadka, Jyoti;Ryan, Barbara;Woodhouse, J. Margaret
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.一个很长的89个项目的问卷进行了试点与45名视障儿童和青少年使用面对面的采访。Rasch分析被用来分析响应类别功能，并促进项目删除，确保一个有效的一维规模。采用Rasch分析和组内相关系数（ICC）对109名视障儿童（58.7%为男生，中位年龄13岁）进行了问卷的信度和效度检验。结论卡迪夫儿童视觉能力问卷（CVAQC）是一种简短、实用的儿童视觉能力问卷，心理测量学上的强大和自我据报道，该仪器可形成一个一维量表，用于评估有视力障碍的儿童和青少年的视觉能力。
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.