ArticleQuality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation2019
Exploration of a cultural-adaptation of the EQ-5D for Thai population: A "bolt-on" experiment.
Article in Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Studying different variations of ranking method to explore health related quality of life dimensions prioritization.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2026Article
- Testing culturally relevant EQ-5D-5L bolt-ons for the Chinese general population: first quantitative phase of a mixed methods study.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2026Article
- Developing and testing bolt-on enhanced EQ-5D-5L for assessing Chinese patients with chronic obstructive pulmonary disease: a mixed-methods study protocol.BMJ open respiratory research · 2026Article
- Identifying and developing culturally relevant EQ-5D-5L bolt-on items for Chinese population: qualitative phase of a mixed-methods study.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2025Article
- Exploring potential EQ-5D bolt-on dimensions with a qualitative approach: an interview study in Hong Kong SAR, China.Health and quality of life outcomes · 2024Article
- Developing and testing culturally relevant bolt-on items for EQ-5D-5L in Chinese populations: a mixed-methods study protocol.BMJ open · 2024Review
- Normative profile of the EQ-5D-5L dimensions, EQ-5D-5L index and EQ-VAS scores for the general Thai population.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2023Article
- The remarkably frequent use of EQ-5D in non-economic research.The European journal of health economics : HEPAC : health economics in prevention and care · 2022Article
- Perceptions of the General Public About Health-related Quality of Life and the EQ-5D Questionnaire: A Qualitative Study in Korea.Journal of preventive medicine and public health = Yebang Uihakhoe chi · 2022Article
- Investigating the Added Value of the EQ-5D-5L With Two Bolt-On Items in Patients With Hemophilia.Frontiers in medicine · 2021Article
- Factors contributing to the ceiling effect of the EQ-5D-5L: an analysis of patients with prostate cancer judged "no-problems".Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2020Observational
Corrections and comments
- Erratum issued
Authors and funding
4 authors.
Funding
Abstract
purposeAs the EQ-5D was developed in western countries with only five dimensions, it might be insensitive to non-western populations including Thai. This study examined the impact of adding two candidate dimensions, "interpersonal relationships (IR)" and "activities related to bending knees (AK)," to the EQ-5D questionnaire, and evaluated their psychometric properties in a Thai population sample.
methodsFace-to-face interviews were conducted with 600 Thai. Ceiling effect for the EQ-5D and the EQ-5D-5L+AK+IR were compared. Spearman's rho correlation was used to determine whether the two new dimensions were redundant with the existing EQ-5D dimensions. Correlations between the two dimensions and similar dimensions of the SF-36v2 were also assessed. Hierarchical multiple regression was performed to evaluate the incremental value of the EQ-5D-5L+AK+IR over the EQ-5D in predicting VAS scores.
resultsThe two new dimensions were not redundant with the existing five dimensions of the EQ-5D. The highest correlation (0.371) was found between MO and AK. The overall ceiling effect decreased by 5% (50.5-45.5%) when using the EQ-5D-5L+AK+IR. Moderate correlations were found between the candidate dimensions and similar dimensions of the SF-36v2. Multiple regression indicated that adding AK (adjusted r
conclusionsOur preliminary results suggested that AK holds promise for making the EQ-5D more relevant to Thai while it is premature to conclude on the impact of IR. Nevertheless, more work is required to carefully assess the value of the new dimensions as well as the trade-off for the modification.
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