 Comparison of the EQ-5D-Y and the CHU-9D instruments in a general child population based on self-reports and proxy-reportsYan Li,
Yanqiu Chen,
Jize Sun,
Mingyu Jiang,
Aixia Ma,
Tiantian Tao () and
Pingyu Chen ()
The European Journal of Health Economics, 2025, vol. 26, issue 4, No 4, 577-588 Abstract: Abstract Objective This study utilized the EQ-5D-Y and the Child Health Utility 9D (CHU-9D) instruments to empirically investigate a general child population aged 7–8 years in China, with the aim of assessing and comparing the performance, correlation, and agreement between these two instruments. Both self-reported and proxy-reported versions of the instruments were considered in the analysis. Methods Data were collected from 7-8-year-old students in the second grade from four schools in Guangxi and Guiyang provinces, China. Children and their proxies independently completed their respective versions of the questionnaires, including the EQ-5D-Y, the CHU-9D, and other socio-demographic information. The psychometric properties of the EQ-5D-Y and the CHU-9D were assessed, including ceiling effects, internal consistency, and known-group validity. Spearman’s correlation coefficient, Intraclass Correlation Coefficient (ICC), and Bland-Altman plots were calculated and plotted to assess the correlation and agreement between the EQ-5D-Y and CHU-9D. Results A total of 369 pairs of valid questionnaires were collected from both children and proxies. Due to the study’s focus on a general child population, both EQ-5D-Y and CHU-9D yielded high utility values, with a significant ceiling effect observed, particularly in the EQ-5D-Y proxy-reported results. Compared to the EQ-5D-Y, the CHU-9D demonstrated a higher Cronbach’s alpha coefficient and better internal consistency. Both instruments also demonstrated known-group validity, distinguishing different health status groups, except for EQ-5D-Y proxy-reported results. Spearman’s correlation coefficient indicated some correlations in similar dimensions and utility values between the EQ-5D-Y and CHU-9D. The ICC of the EQ-5D-Y and CHU-9D utility values was 0.290 for self-reports and 0.383 for proxy-reports, indicating poor agreement between the two instruments. The Bland-Altman plots showed that the mean utility values obtained from EQ-5D-Y were significantly higher than those from CHU-9D. Conclusion The EQ-5D-Y and the CHU-9D demonstrated acceptable performance within the general child population aged 7–8 years in China, except for the EQ-5D-Y proxy-reported version. It suffered from a notable ceiling effect, poor internal consistency, as well as weak known-group validity and discriminative ability. Moreover, although there existed a certain degree of correlation between the EQ-5D-Y and CHU-9D, their utility values exhibited significant differences. Therefore, these instruments are not interchangeable in practice. Keywords: EQ-5D-Y; CHU-9D; Quality of life; Health utility; General child population; China (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:spr:eujhec:v:26:y:2025:i:4:d:10.1007_s10198-024-01722-x Ordering information: This journal article can be ordered from DOI: 10.1007/s10198-024-01722-x Access Statistics for this article The European Journal of Health Economics is currently edited by J.-M.G.v.d. Schulenburg More articles in The European Journal of Health Economics from Springer, Deutsche Gesellschaft für Gesundheitsökonomie (DGGÖ) Contact information at EDIRC. |
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