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Purpose <p>The objective of this paper is to report on the origin of the EQ VAS and current understanding of the EQ VAS conceptual framework via a literature search based on the snowball approach.</p> Methods <p>A review was conducted in two steps: (1) a citation search and (2) a search of the EuroQol group’s grey literature.</p> Results <p>The findings indicate that the EQ VAS was originally designed as a warm-up task for valuing hypothetical health states. The characters of the EQ VAS reflect its valuation origin, such as drawing a line (the previous version), vertical orientation, and choice of end labels. None of these design elements of the EQ VAS were chosen for the purpose of measuring self-reported overall health. Despite this, the EQ VAS proves to be a valid self-reported health status measure with its psychometric properties demonstrated in various general and clinical populations. We found a dearth of literature addressing the conceptual framework of EQ VAS as a measure of self-rated overall health.</p> Conclusion <p>With its potential as a powerful measure of overall health, further research into EQ VAS design, conceptual framework and empirical function is warranted.</p>

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Exploring the origin and conceptual framework of the EQ VAS

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年4月26日

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  • Ling-Hsiang Chuang,
  • Paul Kind,
  • Thomas Kohlmann,
  • You-Shan Feng

摘要

Purpose

The objective of this paper is to report on the origin of the EQ VAS and current understanding of the EQ VAS conceptual framework via a literature search based on the snowball approach.

Methods

A review was conducted in two steps: (1) a citation search and (2) a search of the EuroQol group’s grey literature.

Results

The findings indicate that the EQ VAS was originally designed as a warm-up task for valuing hypothetical health states. The characters of the EQ VAS reflect its valuation origin, such as drawing a line (the previous version), vertical orientation, and choice of end labels. None of these design elements of the EQ VAS were chosen for the purpose of measuring self-reported overall health. Despite this, the EQ VAS proves to be a valid self-reported health status measure with its psychometric properties demonstrated in various general and clinical populations. We found a dearth of literature addressing the conceptual framework of EQ VAS as a measure of self-rated overall health.

Conclusion

With its potential as a powerful measure of overall health, further research into EQ VAS design, conceptual framework and empirical function is warranted.