PROMs

EQ-5D-5L Flow

EQ-5D-5L flow

Introduction

The EQ-5D five-level version (EQ-5D-5L) is an instrument developed by the EuroQol group with the aim to create a generic cardinal index of health, thus giving it considerable potential for use in health care evaluation. The five level version was developed in oder to improve its discriminatory power and reduce the ceiling effect [1].

The EQ-5D-5L flow contains the EQ-5D-5L questionnaire and associated calculation. After form submission, the EQ-5D-5L calculation is executed automatically. It's easy to extend this flow with conditional logic based on the interpretation of the EQ-5D-5L calculation.

EQ-5D-5L questionnaire

Questions and Scoring

The EQ-5D-5L consists of two aspects:

  1. The descriptive system
  2. The visual analog scale (VAS)

The descriptive system contains 5 dimensions describing different aspects of health with 5 levels of severity. The numeric labels are used as numeric description of the health state. Thereby the EQ-5D-5L describes (5^5 =) 3125 health states.

Dimensions:

  • Mobility
  • Self-Care
  • Usual activities
  • Pain / Discomfort
  • Anxiety / Depression

Severity levels:

  1. no problems
  2. slight problems
  3. moderate problems
  4. severe problems
  5. extreme problems

The VAS records the patients self-rated health on a vertical VAS with a range of 0-100. The endpoints are labelled with "The best health you can imagine" (100) and "The worst health you can imagine" (0).

Interpretation

The health state profile of 11111 indicates the best possible health 55555 the worst [2].

References

[1] Herdman M, Gudex C, Lloyd A, Janssen M, Kind P, Parkin D, Bonsel G, Badia X. Development and preliminary testing of the new five-level version of EQ-5D (EQ-5D-5L). Qual Life Res. 2011 Dec;20(10):1727-36. doi: 10.1007/s11136-011-9903-x. Epub 2011 Apr 9. PMID: 21479777; PMCID: PMC3220807.
[2] Van Reenen, M., & Janssen, B. (2015). EQ-5D-5L User Guide. Basic Information on how to use the EQ-5D-5L instrument. Version 2.1. EuroQol Research Foundation.

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