Original Article
Analysis of Glaucoma Quality of Life 17 based on the item response theory
Lyu Qiyuan, Huang Wenmin, Li Gaofeng, Zheng Weixin, Xiao Huiming
Published 2019-09-06
Cite as Chin J Mod Nurs, 2019, 25(25): 3211-3214. DOI: 10.3760/cma.j.issn.1674-2907.2019.25.010
Abstract
ObjectiveTo evaluate the Chinese version of Glaucoma Quality of Life 17 (Glau-QoL17) by item analysis on each item using item response theory (IRT) , so as to provide tools in life quality evaluation in patients with glaucoma in China.
MethodsBy convenience sampling, 198 glaucoma patients admitted in the outpatient department of Opthalmic Center affiliated to Sun Yat-Sen University from May 2017 to July 2018 were selected and their life quality were evaluated by using the Chinese version of Glau-QoL17. MULTILOG 7.0 was used to analyze the collected data in IRT and calculate the discrimination and difficulty parameters of each item.
ResultsThe Chinese version of Glau-QoL17 had good discrimination. The discrimination parameter (α) ranged from 1.50 to 5.23, and the difficulty increased monotonously. Except for the entry "Are you afraid of surgeries?", the other items ranged from-3 to 3; the coverage area under the item information curve was relatively large except for item "Currently, I am very well-informed about my visual problems."
ConclusionsThe Chinese version of Glau-QoL17 can be used in the evaluation of the glaucoma patients' quality of life in our country, however, it still needs further modification on its content so as to improve the accuracy of the evaluation.
Key words:
Glaucoma; Quality of life; Scale; Item Response Theory
Contributor Information
Lyu Qiyuan
Basic Nursing Teaching and Research Office, School of Nursing, Sun Yat-Sen University, Guangzhou 510000, China
Huang Wenmin
Glaucoma Department, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou 510000, China
Li Gaofeng
Glaucoma Department, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou 510000, China
Zheng Weixin
Glaucoma Department, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou 510000, China
Xiao Huiming
Nursing Department, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou 510000, China
