Journal article
Activities of daily vision scale: What do the subscales measure?
VK Gothwal, TA Wright, EL Lamoureux, K Pesudovs
Investigative Ophthalmology and Visual Science | Published : 2010
DOI: 10.1167/iovs.09-3448
Abstract
PURPOSE. Previous Rasch analysis of the Activities of Daily Vision Scale (ADVS) did not address psychometric properties of its subscales or provide detailed assessment of dimensionality (whether the ADVS measures one or multiple constructs). This study was designed to examine these properties. METHODS. Two hundred thirty-two participants (mean age, 74.2 years) awaiting cataract surgery self-administered the ADVS. Rasch analysis was used to assess the ADVS and its five subscales for unidimensionality (by principal components analysis, [PCA]), precision by person separation (discrimination between strata of participant ability), and targeting (matching of item difficulty to participant ability..
View full abstractGrants
Awarded by NHMRC
Awarded by Australian Research Council
Funding Acknowledgements
Supported by NHMRC Public Health Fellowship 359277 (ELL); Australian Research Council Linkage Grant LP0560779 (ELL); NHMRC Centre for Clinical Research Excellence in Ophthalmology Outcomes Research, 2005-2009 (KP); NHMRC Career Development Award, 2007-2011 (KP); Eye Foundation Australian and New Zealand Surveillance Ophthalmic Unit, 2008-2012 (KP); and FMC (Flinders Medical Center) Foundation (KP).