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      Exploring the willingness to pay for a quality-adjusted life-year in the state of Penang, Malaysia

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          Abstract

          Introduction

          The incremental cost-effectiveness ratio (ICER) is typically compared with a reference value to support the cost-effectiveness of a decision. One method for estimating this value is to estimate the willingness-to-pay (WTP) for a quality-adjusted life-year (QALY). This study was conducted to explore the WTP for a QALY in the Malaysian population.

          Methods

          A cross-sectional, contingent valuation study was conducted in Penang, Malaysia. Respondents were selected from randomly chosen geographical grids of Penang. Respondents’ sociodemographic information, qualities of life, and WTP for one additional QALY were collected using predesigned questionnaires in face-to-face interviews. WTP values were elicited using a double-bound dichotomous choice via a bidding game approach. The Heckman selection model was applied to the analysis of the mean WTP/QALY values, where the “protest zero” values, which may contribute to selection bias, were excluded.

          Results

          The mean value of WTP for an additional QALY gained was estimated to be MYR (Malaysian Ringgit) 29,080 (~USD 9,000). Key factors that affected the WTP include ethnicity and estimated monthly household income.

          Conclusion

          The study findings suggested that the cost-effectiveness threshold value as studied in Penang, Malaysia was estimated to be MYR 29,080.

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          Most cited references 40

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          Understanding Power and Rules of Thumb for Determining Sample Sizes

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            Macroeconomics and health: investing in health for economic development

             Jeffrey Sachs (2002)
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              Willingness to pay for a quality-adjusted life year: implications for societal health care resource allocation.

              Health-state preferences can be combined with willingness-to-pay (WTP) data to calculate WTP per quality-adjusted life year (QALY). The WTP/QALY ratios provide insight into societal valuations of expenditures for medical interventions. The authors measured preferences for current health in 3 patient populations (N = 391) using standard gamble, time trade-off, visual analog scale, and WTP, then they calculated WTP/QALY ratios. The ratios were compared with several proposed cost/QALY cost-effectiveness ratio thresholds, the value-of-life literature, and with WTP/QALY ratios derived from published preference research. Mean WTP/QALY ratios ranged from 12,500 to 32,200 US dollars (2003 US dollars). All values were below most published cost-effectiveness ratio thresholds, below the ratio from a prototypic medical treatment covered by Medicare (i.e., renal dialysis), and below ratios from the value-of-life literature. The WTP/QALY ratios were similar to those calculated from published preference data for patients with symptomatic meno-pause, dentofacial deformities, asthma, or dermatologic disorders. WTP/QALY ratios calculated using preference data collected from diverse populations are lower than most proposed thresholds for determining what is "cost-effective." Current proposed cost-effectiveness ratio thresholds may overestimate the willingness of society to pay for medical interventions.
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                Author and article information

                Journal
                Clinicoecon Outcomes Res
                Clinicoecon Outcomes Res
                ClinicoEconomics and Outcomes Research
                ClinicoEconomics and Outcomes Research: CEOR
                Dove Medical Press
                1178-6981
                2014
                23 October 2014
                : 6
                : 473-481
                Affiliations
                Discipline of Social and Administrative Pharmacy, School of Pharmaceutical Sciences, Universiti Sains, Penang, Malaysia
                Author notes
                Correspondence: Asrul Akmal Shafie, Discipline of Social and Administrative Pharmacy, School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia, Tel +60 4 653 4726, Fax +60 4 657 0017, Email aakmal@ 123456usm.my
                Article
                ceor-6-473
                10.2147/CEOR.S67375
                4211862
                006fd7bf-6f1c-4132-9c04-6f981e61a402
                © 2014 Shafie et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License

                The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

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                Original Research

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