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. 2020 Jul;29(7):1923-1933.
doi: 10.1007/s11136-020-02469-7. Epub 2020 Mar 27.

An EQ-5D-5L Value Set for Vietnam

Vu Quynh Mai  1 , Sun Sun  2   3 , Hoang Van Minh  4 , Nan Luo  5 , Kim Bao Giang  6 , Lars Lindholm  2 , Klas Goran Sahlen  2
Affiliations

An EQ-5D-5L Value Set for Vietnam

Vu Quynh Mai et al. Qual Life Res. 2020 Jul.

Abstract

Purpose: The objective of this study was to develop an EQ-5D-5L value set based on the health preferences of the general adult population of Vietnam.

Methods: The EQ-VT protocol version 2.1 was applied. Multi-stage stratified cluster sampling was employed to recruit a nationally representative sample. Both composite time trade-off (C-TTO) and discrete choice experiment (DCE) methods were used. Several modelling approaches were considered including hybrid; tobit; panel and heteroscedastic models. First, models using C-TTO or DCE data were tested separately. Then possibility of combining the C-TTO and DCE data was examined. Hybrid models were tested if it was sensible to combine both types of data. The best-performing model was selected based on both the consistency of the results produced and the degree to which models used all the available data.

Results: Data from 1200 respondents representing the general Vietnamese adult population were included in the analyses. Only the DCE Logit model and the regular Hybrid model that uses all available data produced consistent results. As the priority was to use all available data if possible, the hybrid model was selected to generate the Vietnamese value set. Mobility had the largest effect on health state values, followed by pain/discomfort, usual activities, anxiety/depression and self-care. The Vietnam values ranged from - 0.5115 to 1.

Conclusion: This is the first value set for EQ-5D-5L based on social preferences obtained from a nationally representative sample in Vietnam. The value set will likely play a key role in economic evaluations and health technology assessments in Vietnam.

Keywords: EQ-5D-5L; Generic measures; Utility; Value set.

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Conflict of interest statement

The authors declare no conflicts of interest regarding the publication of this article.

Figures

Fig. 1
Fig. 1
Map indicating regions sample was drawn from for the EQ-5D-5L valuation study in Vietnam
Fig. 2
Fig. 2
Scatter plots of C-TTO vs DCE model predictions
Fig. 3
Fig. 3
Scatter plots of observed mean value vs DCE and Hybrid model predictions
See this image and copyright information in PMC

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