- Title
- Willingness to pay per quality-adjusted life year: is one threshold enough for decision-making?: results from a study in patients with chronic prostatitis
- Creator
- Zhao, Feili; Yue, Ming; Yang, Hua; Wang, Tian; Wu, Jiu-Hong; Li, Shu Chuen
- Relation
- Medical Care Vol. 49, Issue 3, p. 267-272
- Publisher Link
- http://dx.doi.org/10.1097/MLR.0b013e31820192cd
- Publisher
- Lippincott Williams & Wilkins
- Resource Type
- journal article
- Date
- 2011
- Description
- Objective: to estimate the willingness to pay (WTP) per quality-adjusted life year (QALY) ratio with the stated preference data and compare the results obtained between chronic prostatitis (CP) patients and general population (GP). Methods: WTP per QALY was calculated with the subjects' own health-related utility and the WTP value. Two widely used preference-based health-related quality of life instruments, EuroQol (EQ-5D) and Short Form 6D (SF-6D), were used to elicit utility for participants' own health. The monthly WTP values for moving from participants' current health to a perfect health were elicited using closed-ended iterative bidding contingent valuation method. Results: a total of 268 CP patients and 364 participants from GP completed the questionnaire. We obtained 4 WTP/QALY ratios ranging from $4700 to $7400, which is close to the lower bound of local gross domestic product per capita, a threshold proposed by World Health Organization. Nevertheless, these values were lower than other proposed thresholds and published empirical researches on diseases with mortality risk. Furthermore, the WTP/QALY ratios from the GP were significantly lower than those from the CP patients, and different determinants were associated with the within group variation identified by multiple linear regression. Conclusions: preference elicitation methods are acceptable and feasible in the socio-cultural context of an Asian environment and the calculation of WTP/QALY ratio produced meaningful answers. The necessity of considering the QALY type or disease-specific QALY in estimating WTP/QALY ratio was highlighted and 1 to 3 times of gross domestic product/capita recommended by World Health Organization could potentially serve as a benchmark for threshold in this Asian context.
- Subject
- willingness to pay; quality-adjusted life year; cost-effectiveness threshold; chronic prostatitis
- Identifier
- http://hdl.handle.net/1959.13/1056516
- Identifier
- uon:16056
- Identifier
- ISSN:0025-7079
- Language
- eng
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