เปรียบเทียบวิธี

	ความเต็มใจที่จะจ่าย (Willingness to Pay: WTP) ในเศรษฐศาสตร์สาธารณสุข	การวิเคราะห์ต้นทุน-ประสิทธิผล (Cost-Effectiveness Analysis - CEA)
สาขาวิชา	เศรษฐศาสตร์สุขภาพ	เศรษฐศาสตร์สุขภาพ
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1980s	1984
ผู้ริเริ่ม	Carson & Louviere (stated preference/contingent valuation methods)	Drummond & Stoddart (Health Economics Research Group, McMaster University)
ประเภท	Method	Method
แหล่งต้นตำรับ	Carson, R. T., & Louviere, J. J. (2011). A Common Nomenclature for Stated Choice Studies. In S. Hess & A. Daly (Eds.), Choice Modelling: The State of the Art and the State of Practice. Cheltenham: Edward Elgar.	Gold, M. R., Siegel, J. E., Russell, L. B., & Weinstein, M. C. (Eds.). (1996). Cost-Effectiveness in Health and Medicine. New York: Oxford University Press.
ชื่อเรียกอื่น	WTP, contingent valuation, stated preference method	CEA, ICER, Incremental Cost-Effectiveness Ratio
ที่เกี่ยวข้อง	5	5
สรุป	Willingness to pay (WTP) is an economic valuation method that elicits what individuals or society are willing to spend for a health benefit or to avoid a health risk. Rooted in contingent valuation (Carson & Louviere, 1980s), WTP is used to monetize health outcomes for cost-benefit analysis and to infer implicit cost-effectiveness thresholds from actual healthcare spending patterns. Unlike revealed preference (observing actual spending behavior), WTP uses stated preferences—surveys asking respondents: 'How much would you pay for this health improvement?'	Cost-effectiveness analysis compares the incremental cost per unit of health benefit gained by one intervention relative to a comparator (standard care or best alternative). Developed rigorously in the 1980s by Drummond, Stoddart, and colleagues, CEA is now the standard framework for technology appraisal globally. NICE, HAS, CADTH, and other health technology assessment bodies use CEA to decide which treatments warrant public funding and at what price.