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Related Experiment Videos

Estimating a preference-based single index from the Overactive Bladder Questionnaire.

Yaling Yang1, John Brazier, Aki Tsuchiya

  • 1School of Health and Related Research, The University of Sheffield, Sheffield, England, UK. cmp04yy@sheffield.ac.uk

Value in Health : the Journal of the International Society for Pharmacoeconomics and Outcomes Research
|July 24, 2008
PubMed
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Researchers developed a new health index to calculate quality-adjusted life years for overactive bladder (OAB) patients. This tool, based on UK population preferences, aids in assessing new OAB treatments.

Area of Science:

  • Health Economics
  • Patient-Reported Outcomes
  • Quality of Life Measurement

Background:

  • Overactive bladder (OAB) significantly impacts patient quality of life.
  • Existing methods for calculating quality-adjusted life years (QALYs) may not fully capture the nuances of OAB.
  • A validated preference-based index is needed for accurate economic evaluations in OAB.

Purpose of the Study:

  • To derive a preference-based single index for QALY calculation in OAB patients.
  • To utilize the OAB-5D health classification system, based on the OAB Questionnaire (OAB-q).
  • To conduct a survey of the UK general population for health state valuations.

Main Methods:

  • A time-trade-off valuation survey was conducted with the UK public.
  • Respondents valued 99 distinct health states defined by the OAB-5D classification.

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  • Multivariate regression models were used to predict health state values, with model selection based on statistical criteria.

    • Main Results:

    • A mean regression model was identified as the most suitable for economic evaluation.
    • The developed model provides a robust method for valuing OAB health states.

    Conclusions:

    • The study provides a preference-based index for calculating QALYs in OAB.
    • This index will enable cost-effectiveness analyses of new OAB interventions.
    • Facilitates the use of existing and future OAB-q data for economic evaluations.