eHealth literacy in chronic disease patients: An item response theory analysis of the eHealth literacy scale (eHEALS)

PATIENT EDUCATION AND COUNSELING

卷:100

Article

Paige, Samantha R.¹  Krieger, Janice L.²  Stellefson, Michael¹  Alber, Julia M.³ 

[1] Univ Florida, Dept Hlth Educ & Behav, POB 118210, Gainesville, FL 32611 USA

[2] Univ Florida, STEM Translat Commun Ctr, 2024 Weimer Hall, Gainesville, FL 32611 USA

[3] Univ Penn, Ctr Hlth Behav Res, 110 Blockley Hall, Philadelphia, PA 19104 USA

关键词: eHEALS;    eHealth literacy;    Internal structure;    Validity;    Chronic disease;   

DOI  :  10.1016/j.pec.2016.09.008

来源: Elsevier

【 摘 要 】

Background: Chronic disease patients are affected by low computer and health literacy, which negatively affects their ability to benefit from access to online health information. Objective: To estimate reliability and confirm model specifications for eHealth Literacy Scale (eHEALS) scores among chronic disease patients using Classical Test (CTT) and Item Response Theory techniques. Methods: A stratified sample of Black/African American (N = 341) and Caucasian (N = 343) adults with chronic disease completed an online survey including the eHEALS. Item discrimination was explored using bi-variate correlations and Cronbach's alpha for internal consistency. A categorical confirmatory factor analysis tested a one-factor structure of eHEALS scores. Item characteristic curves, in-fit/outfit statistics, omega coefficient, and item reliability and separation estimates were computed. Results: A 1-factor structure of eHEALS was confirmed by statistically significant standardized item loadings, acceptable model fit indices (CFI/TLI>0.90), and 70% variance explained by the model. Item response categories increased with higher theta levels, and there was evidence of acceptable reliability (omega = 0.94; item reliability = 89; item separation = 8.54). Conclusion: eHEALS scores are a valid and reliable measure of self-reported eHealth literacy among Internet-using chronic disease patients. (C) 2016 Elsevier Ireland Ltd. All rights reserved.

【 授权许可】

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