Willingness to Pay for One Additional Quality Adjusted Life Year: A Population Based Survey from China

Ziping Ye (), Raela Abduhilil, Jiaxin Huang and Lihua Sun ()
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Ziping Ye: Shenyang Pharmaceutical University
Raela Abduhilil: Shenyang Pharmaceutical University
Jiaxin Huang: Shenyang Pharmaceutical University
Lihua Sun: Shenyang Pharmaceutical University

Applied Health Economics and Health Policy, 2022, vol. 20, issue 6, No 10, 893-904

Abstract: Abstract Objective The aim of this study was to estimate the population’s willingness to pay (WTP) for an additional quality-adjusted life-year (QALY) in China. Methods The WTP for an additional QALY (WTP/Q) was estimated using a contingent valuation survey with quota sampling and snowball sampling, using a pre-designed questionnaire with 18 hypothetical scenarios. The change in health state was depicted by the EQ-5D-5L. The questionnaires were completed by telephone and face-to-face interviews. Two-part regression models were used to test validity and how different factors affect WTP/Q. Results A total of 2008 people participated in this survey and provided 3265 WTP responses for further analysis. The average WTP/Q for the entire sample is 113,120 Renminbi (RMB) (USD 16,884), which is 1.75 times the gross domestic product (GDP) per capita. For the quality-of-life improvement scenarios, the mean WTP/Q is RMB 78,907 (USD 11,777, 1.22 times GDP per capita), which is significantly lower than the life extension scenarios (RMB 177,761, USD 26,531, 2.76 times GDP per capita). Age was found to be negatively related to positive WTP. Educational level was positively related to the probability of reporting positive WTP and the level of WTP/Q. Although the EQ-5D-5L utility scores of respondents did not prove to be statistically significant determinants of WTP/Q, the two dimensions of EQ-5D-5L, pain/discomfort and anxiety/depression, had an impact on WTP/Q. In addition, WTP/Q was higher when the health outcome had a 50% probability of occurring than when the health outcome was 100% certain. WTP/Q was higher when a lower health gain was presented to the respondent. Conclusion This study provides empirical evidence of the monetary value of an additional QALY from a sample of the Chinese population. In addition, a higher threshold for end-of-life therapies should be considered.

Date: 2022
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DOI: 10.1007/s40258-022-00750-z

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