পদ্ধতির তুলনা করুন

	কোয়ালিটি-অ্যাডজাস্টেড লাইফ ইয়ার (QALY)	স্বাস্থ্য অর্থনীতিতে অর্থ প্রদানে ইচ্ছুক (WTP)
ক্ষেত্র	স্বাস্থ্য অর্থনীতি	স্বাস্থ্য অর্থনীতি
পরিবার	Process / pipeline	Process / pipeline
উদ্ভবের বছর	1985	1980s
প্রবর্তক	Alan Williams (Health Economics Research Centre, Oxford University)	Carson & Louviere (stated preference/contingent valuation methods)
ধরন	Method	Method
মৌলিক উৎস	Kind, P. (1989). The EuroQol instrument: an index of health-related quality of life. In B. Teeling Smith (Ed.), Measuring health: a practical approach. Chichester: Wiley.	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.
অপর নাম	QALY, health utility measure	WTP, contingent valuation, stated preference method
সম্পর্কিত	5	5
সারসংক্ষেপ	A QALY measures health benefit as utility weight (0 = death, 1 = perfect health) multiplied by time lived. Developed by Alan Williams in 1985, QALYs enable comparison of disparate health interventions on a common metric. Used globally by health technology assessment bodies—NICE (UK), HAS (France), CADTH (Canada), WHO—to decide which treatments deserve public funding.	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?'