Development and Validation of the Life for Low Vision Questionnaire (LIFE4LVQ) Using Rasch Analysis: A Questionnaire Evaluating Ability and Independence.

ABSTRACT: Low vision (LV) has a substantial impact on an individual's daily functionality and patient-reported outcome measures (PROMs) are increasingly incorporated into the evaluation of this problem. The objective of this study was to describe the design of the new "Life for Low Vision Questionnaire (LIFE4LVQ)", as a measure of daily functionality in LV and to explore its psychometric properties. A total of 294 participants completed the LIFE4LVQ and the data were subjected to Rasch analysis to determine the psychometric properties of the questionnaire, including response category ordering, item fit statistics, principal component analysis, precision, differential item functioning, and targeting. Test-retest reliability was evaluated with an interval of three weeks and intraclass correlation coef

SUBMITTER: Almpanidou S 

PROVIDER: S-EPMC10095134 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature