Study on the applicability of eHealth Literacy Scale in Web 3.0 context in patients with diabetes: based on classical test theory and item response theory
10.3760/cma.j.cn211501-20240115-00139
- VernacularTitle:电子健康素养Web 3.0量表在糖尿病患者中的适用性研究：基于经典测量理论和项目反应理论
- Author:
Xing JI
1
;
Danning WANG
;
Guiqin GU
;
Lei YANG
;
Juntao CHI
Author Information
1. 康复大学青岛医院（青岛市市立医院）急诊科，青岛 266011
- Keywords:
Diabetes mellitus;
eHealth literacy;
eHLS-Web 3.0;
Classical test theory;
Item response theory
- From:
Chinese Journal of Practical Nursing
2024;40(29):2256-2262
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the item properties and applicability of the eHealth Literacy Scale in Web 3.0 context (eHLS-Web 3.0) among diabetic patients by applying classical test theory (CTT) and item response theory (IRT) to provide a new effective tool for assessing the level of eHealth literacy among diabetic patients.Methods:A cross-sectional study design was adopted and 230 diabetic patients from the inpatient endocrinology department of the Affiliated Yantai Yuhuangding Hospital of Qingdao University were selected by convenience sampling from November 2022 to May 2023 and were surveyed by using the self-general information questionnaire and eHLS-Web 3.0. The correlation coefficient method, Cronbach α coefficient, Guttman split-half reliability coefficient, and structural validity in CCT were used, and discriminant validity, convergent validity, and Samejima Graded Response model in IRT were used to evaluate the scale items. Results:The CTT results showed that Cronbach α coefficient for the eHLS-Web 3.0 was 0.973, the Guttman split-half reliability coefficient was 0.894, and the correlation coefficient between the items and the total score of the scale ranged from 0.708 to 0.845 (all P<0.01). Exploratory factor analysis extracted three common factors with a cumulative variance contribution rate of 76.75%, and the confirmatory factor analysis model had a good fit. The reliability of each dimension combination was >0.60, and the average variance extracted was >0.50. The square root of the average variance extracted from each dimension (0.817, 0.875, 0.845) was greater than the correlation coefficient between this dimension and other dimensions (0.742, 0.763, 0.715). The IRT results showed that the discrimination parameter of all the items ranged from 2.174 to 4.054, the difficulty coefficients increased with the increase of the level (- 2.471 - 2.187), and the average information content of all the items ranged from 1.217 to 2.609. Conclusions:The eHLS-Web 3.0 has good characteristics among diabetic patients as tested by CTT and IRT, and can be used as an effective tool to assess the eHealth literacy level of diabetic patients in China.
