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Valuing health states for use in economic evaluation : an investigation of validity and realibility

Economic analysis is increasingly being employed in formal resource allocation decision-making processes in health care. The consequence is that the methods being employed by economic analysts are increasingly subject to close scrutiny. One such area of methodology concerns the instruments used to elicit preferences for various health states for use in the construction of quality-adjusted life years (QALYs). There are a number of techniques, which can be used to elicit preferences with different techniques producing different results. The empirical work of this thesis explores issues around the reliability and validity of two techniques: Time Trade Off (TTO) and Person Trade Off (PTO). There was little convergence between the PTO and TTO techniques, with TTO weights tending to be lower than PTO. Semi structure interviews conducted with respondents highlighted a number of issues around technical aspects such as framing effects, administration and process issues. The other area of interest is around the theoretical and psychological underpinnings of the QALY approach and relate solely to the issue of the content validity of an instrument.
Date January 2007
CreatorsRobinson, Suzanne Marie
PublisherUniversity of Birmingham
Source SetsEthos UK
Detected LanguageEnglish
TypeElectronic Thesis or Dissertation

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