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Analysis Tools| FAQs

General

There are no 3L or 5L value sets for my country, but I collected EQ-5D data and need to estimate health state utility values. Which value set should I use?

There are over 30 country specific value sets for the EQ-5D-3L and more than 20 country specific value sets for the EQ-5D-5L. While we aim to produce value sets for many more countries, it is not rare that users need a value set that is not yet available. If you need to obtain health state utility values for the EQ-5D-3L, it is recommended to use the United Kingdom value set from Dolan et al. (2002). If you need to obtain health state utility values for the EQ-5D-5L, the recommendation is to use the United States EQ-5D-5L value set from Pickard et al. (2019) as the United Kingdom valuation study is currently ongoing.

For analysis of my EQ-5D-3L data should I use TTO or VAS if both available?

If both TTO and VAS tariffs are available for your country, it would be recommended to use TTO tariffs. This is because, contrary to VAS, TTO is a choice-based preference elicitation method. This method is the preferred elicitation procedure according to the EQ-VT protocol.

Which value set(s) should I apply in case of an international study?

If you need to obtain health state utility values for the EQ-5D-5L, the recommendation is to use the United States EQ-5D-5L value set from Pickard et al. (2019) as the United Kingdom valuation study is currently ongoing.  If you need to obtain health state utility values for the EQ-5D-3L, it is recommended to use the United Kingdom value set from Dolan et al. (2002).

There is no 3L value set for my country, but a 5L value set is available. Yet, I need health state utility values for the 3L version. Is this possible?

Yes. If a 5L value set is available for your country, you can estimate 3L utility values using the reverse cross-walk. This can be done with one of the tools available on the website. As an alternative, you might choose to use the United Kingdom EQ-5D-3L value set of Dolan et al. (2002).

There is no 5L value set for my country, but a 3L value set is available. Yet, I need health state utility values for the 5L version. Is this possible?

Yes. If a 3L value set is available for your country, you can estimate 5L utility values using the cross-walk. This can be done with one of the tools available on the website. As an alternative, you might choose to use the United States EQ-5D-5L value set of Pickard et al. (2019).

Both the cross-walk and the standard 5L value set are available for my country. Which should I use?

The cross-walk was intended as an interim solution to obtain EQ-5D-5L values while no value set for this instrument was available, but a value set for the EQ-5D-3L existed. Whilst the cross-walk is appropriate to answer methodological scientific questions and to obtain health state utility values in absence of  a country specific EQ-5D-5L value set, the recommendation is to use the standard EQ-5D-5L value set if it exists.

Both the reverse cross-walk and the standard 3L value set are available for my country. Which should I use?

The reverse cross-walk can be used to obtain EQ-5D-3L health state utility values using the EQ-5D-5L country specific value set. If both an EQ-5D-3L value set and the reverse cross-walk are available, no direct recommendation can be made. If the EQ-5D-3L value set was produced using the recent EQ-VT valuation protocol, it might be reasonable to use this value set. If the EQ-5D-3L value set is relatively old, the user should assess whether preference might have changed in the country of interest and what is the likely impact of using a value set conducted using another valuation protocol. These considerations might lead to prefer the reverse cross-walk over the standard EQ-5D-3L value set, or vice versa.

I collected EQ-5D-Y data in my country, but there is currently no value set available for this measure. What should I do?

There are currently no EQ-5D-Y country specific value sets. The first EQ-5D-Y valuation are expected to be published in the last quoter of 2020, beginning of 2021. Further guidance will be provided once these become available.

Are there any conditions of use of the tools available on the website?

By using the tools available on the website, you accept the EQ disclaimer reported in this section. This implies that the EQ Foundation and EQ Office make no representation or warranty on the correctness, adequacy, accuracy and completeness of the tools presented here, nor do warrant that the tools shall be complete in every respect. The EQ Foundation and EQ Office shall have no responsibility nor liability resulting from the use of these tools, nor for the absence of information on the site.

Can I make edits to the tools available on the website?

You are free to make any edits to the tools presented on the website. Yet, no responsibility will be taken by the EQ Foundation or EQ Group for any edits made. If one of the tools is edited, the edited tool should be sent to finch@euroqol.org.

(Version 3NOV2020)

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