The relative sensitivity of willingness-to-pay and time-trade-off to changes in health status: an empirical investigation


Smith, RD; (2001) The relative sensitivity of willingness-to-pay and time-trade-off to changes in health status: an empirical investigation. Health economics, 10 (6). pp. 487-97. ISSN 1057-9230 DOI: 10.1002/hec.604

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Abstract

This paper directly compares the relative sensitivity of time-trade-off (TTO) and willingness-to-pay (WTP) values obtained for various levels of change in health status. This was achieved by administering a TTO and WTP survey to a population of 50 subjects, assessing their valuation of various degrees of change in health status. It was found that, overall, WTP is more sensitive than TTO in distinguishing between different dimensions of health at the same nominal level of health status (only four WTP values not significantly different, compared with eight TTO values). In addition, WTP was also more sensitive to differences in quality of life between different levels of health within each dimension (all values significantly different from each other, with TTO yielding three insignificant relationships). These results tentatively suggest, therefore, that WTP seems to be a more sensitive measure of change in health status than TTO.

Item Type: Article
Keywords: Adult, Bias (Epidemiology), Comparative Study, Cost-Benefit Analysis, Female, *Financing, Personal, Health Services Research, *Health Status, Humans, Longevity, Male, Patient Acceptance of Health Care: *psychology, Quality-Adjusted Life Years, Questionnaires, Sampling Studies, Sensitivity and Specificity, Time Factors, Value of Life: *economics, Victoria, Adult, Bias (Epidemiology), Cost-Benefit Analysis, Female, Financing, Personal, Health Services Research, Health Status, Humans, Longevity, Male, Patient Acceptance of Health Care, psychology, Quality-Adjusted Life Years, Questionnaires, Sampling Studies, Sensitivity and Specificity, Time Factors, Value of Life, economics, Victoria
Faculty and Department: Faculty of Public Health and Policy
Research Centre: Centre for Global Non-Communicable Diseases (NCDs)
PubMed ID: 11550290
Web of Science ID: 171197500002
URI: http://researchonline.lshtm.ac.uk/id/eprint/10067

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