The increased attention for quality of life (QOL) as an outcome measure has led to the
development of numerous questionnaires to assess this construct in the field of …

The application of the Rasch measurement model in rehabilitation is now well established.
Both its dichotomous and polytomous forms provide for transforming ordinal scales into …

The open and massive characteristics of Massive Open Online Course (MOOC) lead to a
lack of instructor presence, which potentially hinders learners' commitment and learning …

PURPOSE: To assess and optimize the Catquest questionnaire for measuring patient-
reported outcomes of cataract surgery using Rasch analysis. SETTING: Fifty-eight …

purpose. To explore the psychometric properties of the Impact of Vision Impairment scale
(IVI) by using Rasch analysis. methods. Three hundred fourteen first-time referrals to low …

PURPOSE: To test the assumption that the National Eye Institute Visual Function
Questionnaire (NEI VFQ) measures visual functioning, assess the validity of its subscales …

purpose. To evaluate the effectiveness of a multidisciplinary low-vision rehabilitation
program on quality of life evaluated by the Impact of Vision Impairment (IVI) instrument …

purpose. The Activities of Daily Vision Scale (ADVS) has been extensively validated by
traditional methodology. In the current study, Rasch analysis was used to explore further the …

Purpose.: To determine the psychometric validity of the National Eye Institute-Visual
Function Questionnaire (NEI VFQ-25) and its subscale structure for use in people with low …

Purpose.: To validate the Impact of Vision Impairment for Children (the IVI_C), a new vision-
specific pediatric instrument designed to assess the affect of impaired vision on quality of life …