Purchase this article with an account.
Xianchai Lin, Mingge Li, Xueying Zhongliu, Minbin Yu; Development of a Chinese version of the Catquest-9SF Questionnaire as a tool for patients with cataract in China. Invest. Ophthalmol. Vis. Sci. 2014;55(13):178. doi: https://doi.org/.
Download citation file:
© ARVO (1962-2015); The Authors (2016-present)
The purpose of this study was to develop a Chinese version of the Catquest-9SF Questionnaire (CHI-Catquest-9SF) and to test its reliability and validity in a group of patients with cataract in China.
The Catquest-9SF Questionnaire was translated into Chinese. Preoperative patients were recruited from Zhongshan Ophthalmic Center, and their demographic data and visual acuity were documented. Psychometric properties of the CHI-Catquest-9SF, including internal consistency, test-retest reliability, item-scale correlations and construct validity were tested.
A total of 75 patients were recruited and participated in the study. The non-response rate and the floor and ceiling numbers of the CHI-Catquest-9SF were calculated. The internal consistency was high in most subscales, and Cronbach alpha ranged from 0.70-0.92. The test-retest reliability was excellent (intraclass correlation coefficient >0.89). Patients with worse visual acuity had significantly poorer scores on the CHI-Catquest-9SF. Rasch analysis showed that this version of the questionnaire had order response thresholds and was free from differential item functioning. The items fit a single overall construct and unidimensional by principal components analysis.
The CHI-Catquest-9SF is a reliable and valid tool for assessing the visual disability outcomes of Chinese patients with cataract, and it may be recommended for routine clinical use.
This PDF is available to Subscribers Only