FAQS | EQ-5D-3L

If there is no value set for my country, I am supposed to use an existing value set for a similar population. How do I assess whether a population is sufficiently similar?

Please see this webpage on choosing a value set. Many factors determine if another country’s value set can be used, such as geography, religion, language, level of development of the country, healthcare system etc. In addition, local HTA guidelines may come into play. Therefore, it is advised to contact local regulatory authorities about their requirements.…

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How should EQ-5D data (value sets) from multinational clinical trials be used?

Data on EQ-5D health states gathered in the context of a multinational trial may be converted into a single summary index using one of the available EQ-5D-3L value sets. There are different options available to do this using appropriate value sets, however, the choice depends on the context in which researchers or decision makers will…

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Why are general population values sets used?

To undertake a utility analysis, you will need to use a value set. Generally speaking, utility analysis requires a value set based on preferences from a general population. The rationale behind this is that the values are supposed to reflect the preferences of local taxpayers and potential receivers of healthcare. The EQ-5D value sets are…

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How do I refer to the EQ-5D-3L instruments in publications?

When publishing results obtained with the EQ-5D-3L, the following key references can be used: If you used a value set in your study you can also include a reference to the publication describing that value set.

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Can I publish our study using EQ-5D?

Yes, you are free to publish your results. If you would like to reproduce the EQ-5D questionnaire in your publication, please contact the EuroQol Office.

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Can I combine results from different modes of administration?

In some cases, data may be collected using different approaches within the same study. Three situations are not uncommon: data may be collected using a combination of self-complete versions and patient interview versions (e.g. in a study with trauma patients in which some patients can physically complete the questionnaire, but others cannot – though they…

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How can the digital based EQ-5D questionnaires be integrated into a larger set of patient questionnaires?

Typically, EQ-5D is one of several questionnaires that are used in a study. Depending on your situation, you will either be using a system such as REDCap to combine all these questionnaires and collect the data, or you will be working with an eCRF vendor who will take care of this.

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Where can I find STATA/SPSS tools for EQ-5D, such as syntax files?

Please contact the EuroQol office.

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I have seen EQ-5D ‘language’ using 5 numbers (e.g. 12321 or 43251). What does this mean?

The descriptive system section of the EQ-5D questionnaire produces a 5-digit health state profile that represents the level of reported problems on each of the five dimensions of health, e.g. EQ-5D-5L health state 11313 represents a patient who indicates moderate problems on the usual activities and anxiety/depression dimensions and no problems on the remaining dimensions.…

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Am I allowed to make changes to the EQ-5D?

Without the prior written consent of the EuroQol Office, you are not permitted to alter, amend or convert the EQ-5D and related proprietary materials. If you have any plans to conduct a scientific study investigating a modification of EQ-5D please contact the EuroQol Office.

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