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Assessment of the Swedish EQ-5D experience-based value sets in a total hip replacement population

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Abstract

Background

All patients undergoing elective total hip replacement (THR) in Sweden are asked to complete a survey, including the EQ-5D. Thus far, EQ-5D values have been presented using the UK TTO value set based on hypothetical values. Shift to the use of the recently introduced Swedish experience-based value set, derived from a representative Swedish population, is an appealing alternative.

Purpose

To investigate how accurate the Swedish experience-based VAS value set predicts observed EQ VAS values and to compare correlations between Swedish and UK value sets including two provisional value sets derived from the THR population.

Methods

Pre- and one-year postoperative data from 56,062 THR patients from the Swedish Hip Arthroplasty Register were used. Agreement between the observed and the predicted EQ VAS values was assessed with correlation. Based on pre- and postoperative data, we constructed two provisional VAS value sets.

Results

Correlations between observed and calculated values using the Swedish VAS value set were moderate (r = 0.46) in preoperative data and high (r = 0.72) in postoperative data. Correlations between UK and register-based value sets were constantly lower compared to Swedish value sets. Register-based values and Swedish values were highly correlated.

Conclusions

The Swedish value sets are more accurate in terms of representation of the Swedish THR patients than the currently used UK TTO value set. We find it feasible to use the experience-based Swedish value sets for further presentation of EQ-5D values in the Swedish THR population.

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Acknowledgments

We would like to acknowledge helpful comments at the EuroQol Scientific Plenary Meeting 2014. This study is an analysis of the databases in the Swedish Hip Arthroplasty Register, which is funded by the Swedish National Board of Health and Welfare, the Swedish Association of Local Authorities and Regions, and the County Council of the Western Region of Sweden. Research grants from Dr Felix Neuberghs Foundation, Wangstedts Foundation, Göran Bauer Foundation, Gothenburg Medical Association, and Swedish Medical Association have contributed financially to this study. The publication of the results is not contingent on the sponsor’s approval. All valuable discussions in the Health Outcomes and Economic Evaluation Research Group and in the Equity and Health Policy Research Group at Karolinska Institutet are gratefully acknowledged, as well as suggestions received at the 31st EuroQol Plenary Meeting in Stockholm 2014. We would like to express our sincere thanks and appreciation to all orthopedic surgeons and administrators involved in the collection and registration of PROMs data for THR patients in Sweden for their devoted work. We would also like to thank the anonymous reviewers and the editor for their constructive and valuable comments and suggestions.

Author information

Authors and Affiliations

  1. Swedish Hip Arthroplasty Register, Gothenburg, Sweden

    Szilárd Nemes, Ted Eneqvist, Göran Garellick & Ola Rolfson

  2. Department of Orthopaedics, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden

    Szilárd Nemes, Ted Eneqvist, Göran Garellick & Ola Rolfson

  3. Medical Management Centre, Department of Learning, Informatics, Management and Ethics, Karolinska Institutet, Stockholm, Sweden

    Kristina Burström & Niklas Zethraeus

  4. Equity and Health Policy Research Group, Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden

    Kristina Burström

  5. Stockholm County Council, Health Care Services, Stockholm, Sweden

    Kristina Burström

  6. The Dental and Pharmaceutical Benefits Agency, Stockholm, Sweden

    Niklas Zethraeus

  7. Harris Orthopaedic Laboratory, Massachusetts General Hospital, Boston, MA, USA

    Ola Rolfson

Authors
  1. Szilárd Nemes
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  2. Kristina Burström
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  3. Niklas Zethraeus
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  4. Ted Eneqvist
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  5. Göran Garellick
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  6. Ola Rolfson
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Corresponding author

Correspondence to Szilárd Nemes.

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Nemes, S., Burström, K., Zethraeus, N. et al. Assessment of the Swedish EQ-5D experience-based value sets in a total hip replacement population. Qual Life Res 24, 2963–2970 (2015). https://doi.org/10.1007/s11136-015-1020-9

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  • DOI: https://doi.org/10.1007/s11136-015-1020-9

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