Relative risk of a shuffled deck: a generalizable logical consistency criterion for sample selection in health state valuation studies

Health Economics
Benjamin M Craig, Sulabha Ramachandran

Abstract

In a health state valuation study, respondents may be asked to rank a deck of cards, with each card representing a particular health state. A logical inconsistency occurs when a more severe health state card is ranked higher than a less severe card. Occasional inconsistencies may be justified by errors in judgment or measurement. However, when respondents return shuffled decks, their responses must be removed from the sample; otherwise, valuation estimates will be biased toward the median. In this paper, we present a logical consistency criterion for sample selection in health state valuation studies. This statistical criterion is based on the relative risk of a shuffled deck and generalizable to all health state classification systems, subsets (or decks) of health states, and valuation techniques. We applied the criterion to secondary data collected from 4048 United States and 3395 United Kingdom respondents. In both studies, respondents evaluated 12-card decks of EQ-5D health states using time trade-off and visual analog scale techniques. Among the UK respondents, a small portion (approximately 5%) did not satisfy the criterion; their exclusion significantly changed the sample characteristics and the mean value estimates of t...Continue Reading

References

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Citations

Jan 16, 2009·Population Health Metrics·Benjamin M Craig, Jan Jv Busschbach
Jun 21, 2011·Applied Health Economics and Health Policy·Eve Wittenberg, Lisa A Prosser
Oct 24, 2008·Journal of Clinical Epidemiology·Benjamin M CraigJoshua A Salomon
Aug 3, 2010·Health Economics·Benjamin M Craig, Jan J V Busschbach
Mar 17, 2015·Value in Health : the Journal of the International Society for Pharmacoeconomics and Outcomes Research·Benjamin M CraigMark Oppe
Aug 21, 2015·Medical Decision Making : an International Journal of the Society for Medical Decision Making·Mônica Viegas AndradeLucas Resende de Carvalho
Jul 26, 2015·Medical Decision Making : an International Journal of the Society for Medical Decision Making·Lidia EngelDavid G T Whitehurst

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