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J Clin Epidemiol. 1998 Aug;51(8):667-76.

Valuing outcomes in health care: a comparison of willingness to pay and quality-adjusted life-years.

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  • 1Research Triangle Institute, Research Triangle Park, North Carolina 27709, USA.


Quality-adjusted life-years (QALYs) and willingness to pay (WTP) are two preference-based measures of health-related outcomes. In this article, we compare these two measures in eliciting individuals' preferences for health outcomes associated with shingles. To collect the necessary preference data, we administered computer-interactive interviews to a sample of 65- to 70-year-olds. We found no significant correlation between QALYs and WTP across individuals. We discuss our findings and argue that our results raise questions about whether QALYs and WTP are equivalent preference-based measures of health outcomes.

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