Abstract
Purpose
To develop a quality of life questionnaire appropriate for elderly low-vision patients in less-developed areas of China.
Methods
The study was conducted at the Wenzhou Medical University Affiliated Eye Hospital. In the initial development of the questionnaire, we identified visual function concerns with individual interviews and designed a questionnaire and an empirical assessment of the questionnaire. Each individual visual function concern was then transformed into a question and put into a rating scale from 0 to 4. Then, questionnaire interviews were conducted on 188 low-vision patients and 63 normal control patients for item reduction and evaluation of psychometric properties.
Results
We first identified 24 concerns that older adults with serious vision loss thought most affected their daily lives. The initial item list of the Elderly Low Vision Quality of Life Questionnaire (ELVQoL) consisted of 28 items, including the 24 identified items and 4 additional concerns about general vision. Psychometric item reduction removed 9 items, and a 19-item questionnaire was generated. Assessment showed that the resulting questionnaire had acceptable internal consistency, reliability, and validity (Cronbach’s α > 0.9, mean item–total correlations >0.6, test–retest reliability >0.9, and concurrent validity range from 0.6 to 0.9). Low education level, need for a full range of working distances, and retinal diseases were all predictors of reduced visually related quality of life.
Conclusions
A patient-derived ELVQoL Questionnaire was developed specifically for elderly, uneducated, rural Chinese. All the psychometric properties met accepted levels for a disease-specific Qol Questionnaire.
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Abbreviations
- AS-20:
-
Adult Strabismus Questionnaire
- ADVS:
-
Activities of Daily Vision Scale
- CLVQOL:
-
Chinese version of the Low Vision Quality of Life Questionnaire
- ELVQoL:
-
Elderly Low Vision Quality of Life Questionnaire
- FVQ-CYP:
-
Functional Vision Questionnaire for children and young people with visual impairment
- IND-VFQ:
-
Indian Vision Function Questionnaire
- LVQOL:
-
Low Vision Quality of Life Questionnaire
- MGQ:
-
Myasthenia Gravis Questionnaire
- NEI-VFQ25:
-
National Eye Institute Visual Function Questionnaire 25
- VF-14:
-
Visual Functional Index 14
- VCM1:
-
Vision-Related Quality of Life Core Measure
- VDQ:
-
Visual Disability Questionnaire
- VRQoL:
-
Vision-related quality of life
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Acknowledgments
The study was supported by the National Natural Science Foundation of China (Grant No 81170869). The funding organization had no role in the design or conduct of this research. No conflicting relationship exists for any authors. The authors would like to thank Dr. Frank Thorn and Dr. Alan Johnston for their comments and English editing. The authors also would like to thank colleagues from the Eye Hospital of Wenzhou Medical University who helped with patient recruitment.
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Li, X., Chen, J., Xu, G. et al. Development of an Elderly Low Vision Quality of Life Questionnaire for less-developed areas of China. Qual Life Res 24, 2403–2413 (2015). https://doi.org/10.1007/s11136-015-0970-2
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DOI: https://doi.org/10.1007/s11136-015-0970-2