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Estimation of a preference based single index from the sexual quality of life questionnaire (SQOL) using ordinal data

Author

Listed:
  • Ratcliffe, J
  • Brazier, J
  • Tsuchiya, A
  • Symonds, T
  • Brown, M

Abstract

There is increasing interest in using ordinal methods to estimate cardinal values for health states to calculate quality adjusted life years. This paper reports the estimation of models of rank data and discrete choice experiment (DCE) data to derive a preference-based index from a condition specific measure relating to sexual health and to compare the results to values generated from time trade-off valuation (TTO). The DCE data were analysed using a random effects probit model and the DCE predicted values were rescaled according to the highest and lowest predicted TTO values corresponding to the best and worst SQOL health states respectively. The rank data were analysed using a rank ordered logit model and re-scaled using two alternative methods. Firstly, re-scaling the rank predicted values using identical methods to those employed for DCE and secondly, re-scaling the rank model coefficients by dividing each level coefficient by the coefficient relating to death. The study raises some important issues about the use of ordinal data to produce cardinal health state valuations.

Suggested Citation

  • Ratcliffe, J & Brazier, J & Tsuchiya, A & Symonds, T & Brown, M, 2006. "Estimation of a preference based single index from the sexual quality of life questionnaire (SQOL) using ordinal data," MPRA Paper 29768, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:29768
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    References listed on IDEAS

    as
    1. McCabe, Christopher & Brazier, John & Gilks, Peter & Tsuchiya, Aki & Roberts, Jennifer & O'Hagan, Anthony & Stevens, Katherine, 2006. "Using rank data to estimate health state utility models," Journal of Health Economics, Elsevier, vol. 25(3), pages 418-431, May.
    2. Brazier, John & Roberts, Jennifer & Deverill, Mark, 2002. "The estimation of a preference-based measure of health from the SF-36," Journal of Health Economics, Elsevier, vol. 21(2), pages 271-292, March.
    3. Joshua A. Salomon & Christopher J.L. Murray, 2004. "A multi‐method approach to measuring health‐state valuations," Health Economics, John Wiley & Sons, Ltd., vol. 13(3), pages 281-290, March.
    Full references (including those not matched with items on IDEAS)

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    Keywords

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    JEL classification:

    • I31 - Health, Education, and Welfare - - Welfare, Well-Being, and Poverty - - - General Welfare, Well-Being
    • I19 - Health, Education, and Welfare - - Health - - - Other

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