Optimizing measurement of vision-related quality of life: a computerized adaptive test for the impact of vision impairment questionnaire (IVI-CAT).

Eva Katie FenwickBao Sheng LoeJyoti KhadkaRyan E K ManGwyn ReesEcosse Luc Lamoureux

Published in: Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation (2019)

Compared to the paper-pencil IVI instrument, the IVI-CATs required fewer items without loss of measurement precision, making them potentially attractive outcome instruments for implementation into clinical trials, healthcare, and research. Final versions of the IVI-CATs are available.

Keyphrases

healthcare
clinical trial
primary care
patient reported outcomes
quality improvement
cross sectional
open label
social media
phase iii