English, Article, Journal or magazine article edition: A Test of the Predictive Validity of Non-linear QALY Models Using Time Trade-off Utilities José Mª Abellán; José Luis Pinto; Ildefonso Méndez; ...

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Bookmark: http://trove.nla.gov.au/version/154803
Physical Description
  • preprint
Language
  • English

Edition details

Title
  • A Test of the Predictive Validity of Non-linear QALY Models Using Time Trade-off Utilities
Author
  • José Mª Abellán
  • José Luis Pinto
  • Ildefonso Méndez
  • Xabier Badía
Physical Description
  • preprint
Notes
  • This paper presents a test of the predictive validity of various classes of QALY models (i.e., linear, power and exponential models). We first estimated TTO utilities for 43 EQ-5D chronic health states and next these states were embedded in health profiles. The chronic TTO utilities were then used to predict the responses to TTO questions with health profiles. We find that the power QALY model clearly outperforms linear and exponential QALY models. Optimal power coefficient is 0.65. Our results suggest that TTO-based QALY calculations may be biased. This bias can be avoided using a power QALY model.
  • Cost-utility analysis, QALYs, power QALY model, predictive validity, time tradeoff, Leex
  • RePEc:upf:upfgen:741
Language
  • English
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