Logical inconsistencies in survey respondents' health state valuations - a methodological challenge for estimating social tariffs
AbstractLogical inconsistencies in survey respondents' valuations of hypothetical health states - represented by the EQ-5D, for example - present a conundrum as to whether or not their responses ought to be included for estimating social 'tariffs'. A 'logical inconsistency' occurs when a state that 'in logical terms' is unambiguously less severe than another is assigned a lower value. Excluding such responses is defensible on data quality grounds but puts at risk the representativeness of the estimated tariff, given it is meant to represent the preferences of 'society'. This paper explores the rationale for and effect of excluding, to varying degrees, responses distinguished by the number of pairwise inconsistencies they contain, and reports equations for two tariffs that arise from contrasting approaches. The data are from a random sample of adult New Zealanders whose visual analogue scale valuations for a selection of EQ-5D states were collected in 1999 via a postal survey to which 1360 people responded (a 50% response rate). We conclude that there is no simple, generalisable 'rule' to guide exclusions and therefore researchers ought to explore the sensitivity of their estimated tariffs (and ultimately QALY estimates) to alternative treatments of logically inconsistent responses. Copyright © 2002 John Wiley & Sons, Ltd.
Download InfoIf you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
Bibliographic InfoArticle provided by John Wiley & Sons, Ltd. in its journal Health Economics.
Volume (Year): 12 (2003)
Issue (Month): 7 ()
Contact details of provider:
Web page: http://www3.interscience.wiley.com/cgi-bin/jhome/5749
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.:
- Stefan Björk & Anna Norinder, 1999. "The weighting exercise for the Swedish version of the EuroQol," Health Economics, John Wiley & Sons, Ltd., vol. 8(2), pages 117-126.
- Badia, Xavier & Roset, Monserrat & Herdman, Michael, 1999. "Inconsistent responses in three preference-elicitation methods for health states," Social Science & Medicine, Elsevier, vol. 49(7), pages 943-950, October.
- Bansback, Nick & Brazier, John & Tsuchiya, Aki & Anis, Aslam, 2012. "Using a discrete choice experiment to estimate health state utility values," Journal of Health Economics, Elsevier, vol. 31(1), pages 306-318.
- Parkin, D. & Devlin, N., 2004.
"Is there a case for using Visual Analogue Scale valuations in Cost-Utility Analysis?,"
04/03, Department of Economics, City University London.
- David Parkin & Nancy Devlin, 2006. "Is there a case for using visual analogue scale valuations in cost-utility analysis?," Health Economics, John Wiley & Sons, Ltd., vol. 15(7), pages 653-664.
- Richard Norman & Paula Cronin & Rosalie Viney & Madeleine King & Deborah Street & John Brazier & Julie Ratcliffe, 2007. "Valuing EQ-5D health states: A review and analysis, CHERE Working Paper 2007/9," Working Papers 2007/9, CHERE, University of Technology, Sydney.
- Versteegh, MM & Attema, AE & Oppe, M & Devlin, NJ & Stolk, EA, 2012. "Time to tweak the TTO. But how?," MPRA Paper 37989, University Library of Munich, Germany.
- Irina Cleemput, 2010. "A social preference valuations set for EQ-5D health states in Flanders, Belgium," The European Journal of Health Economics, Springer, vol. 11(2), pages 205-213, April.
- Bansback, Nick & Brazier, John & Tsuchiya, Aki & Anis, Aslam, 2010. "Using a discrete choice experiment to estimate societal health state utility values," MPRA Paper 29933, University Library of Munich, Germany.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Wiley-Blackwell Digital Licensing) or (Christopher F. Baum).
If references are entirely missing, you can add them using this form.