Multi-center validation of Catquest-9SF visual function questionnaire in Ontario, Canada.

ABSTRACT:

Purpose

To investigate the psychometric performance and responsiveness of Catquest-9SF, a patient-reported questionnaire developed to evaluate visual function as related to daily tasks, in patients referred for cataract surgery in Ontario, Canada.

Methods

This is a pooled analysis on prospective data collected for previous projects. Subjects were recruited from three tertiary care centers in Peel region, Hamilton, and Toronto, Ontario, Canada. Catquest-9SF was administered pre-operative and post-operatively to patients with cataract. Psychometric properties, including category threshold order, infit/outfit, precision, unidimensionality, targeting, and differential item functioning were tested using Rasch analysis with Winsteps software (v.4.4.4) for Catquest-9SF. Responsiven

SUBMITTER: Kabanovski A 

PROVIDER: S-EPMC10325044 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature