Tests of Utility Independence When Health Varies over Time
In the conventional QALY model, people's preferences are assumed to satisfy utility independence. When health varies over time, utility independence implies that the value attached to a health state is independent of the health state that arise before or after it. In this paper we set out to test the extent to which utility independence is undermined by sequence and duration effects. Two separate studies were conducted involving a total of 155 respondents. In study one, we conducted 5 tests of utility independence using a standard gamble question. Three of the tests of utility independence were repeated in study two after randomisation was introduced in order to take account of possible ordering effects. Utility independence holds in the majority of cases examined here and so our work generally supports the use of utility independence to derive more tractable models.
|Date of creation:||May 2007|
|Contact details of provider:|| Postal: London E1 4NS|
Phone: +44 (0) 20 7882 5096
Fax: +44 (0) 20 8983 3580
Web page: http://www.econ.qmul.ac.uk
More information through EDIRC
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Doctor, Jason N. & Bleichrodt, Han & Miyamoto, John & Temkin, Nancy R. & Dikmen, Sureyya, 2004. "A new and more robust test of QALYs," Journal of Health Economics, Elsevier, vol. 23(2), pages 353-367, March.
- Daniel Kahneman & Robert Sugden, 2005. "Experienced Utility as a Standard of Policy Evaluation," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 32(1), pages 161-181, September.
- Guerrero, Ana M. & Herrero, Carmen, 2005. "A semi-separable utility function for health profiles," Journal of Health Economics, Elsevier, vol. 24(1), pages 33-54, January.
- Bleichrodt, Han & Quiggin, John, 1997. "Characterizing QALYs under a General Rank Dependent Utility Model," Journal of Risk and Uncertainty, Springer, vol. 15(2), pages 151-165, November.
When requesting a correction, please mention this item's handle: RePEc:qmw:qmwecw:wp596. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Nicholas Owen)
If references are entirely missing, you can add them using this form.