Development of a new Rasch-based scoring algorithm for the National Eye Institute Visual Functioning Questionnaire to improve its interpretability
Abstract Background The NEI VFQ-25 has undergone psychometric evaluation in patients with varying ocular conditions and the general population. However, important limitations which may affect the interpretation of clinical trial results have been previously identified, such as concerns with reliabil...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
BMC
2017-08-01
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| Series: | Health and Quality of Life Outcomes |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s12955-017-0726-5 |