手法を比較

	Social Cost-Benefit Analysis	費用便益分析（CBA）
分野	経済学	医療経済学
系統	Process / pipeline	Process / pipeline
提唱年	1974	1970s
提唱者	Ian Little & James Mirrlees; Partha Dasgupta, Amartya Sen & Stephen Marglin (UNIDO)	Boardman, Greenberg, and colleagues (welfare economics)
種類	Welfare-based project appraisal using shadow prices	Method
原典	Little, I. M. D., & Mirrlees, J. A. (1974). Project Appraisal and Planning for Developing Countries. Heinemann Educational / Basic Books. ISBN: 9780435845001	Boardman, A. E., Greenberg, D. H., Vining, A. R., & Weimer, D. L. (2018). Cost-Benefit Analysis: Concepts and Practice (5th ed.). Cambridge: Cambridge University Press.
別名	SCBA, Economic Appraisal, Shadow-Price Cost-Benefit Analysis, Social Appraisal of Investment Projects	CBA, economic appraisal, benefit-cost ratio
関連	3	5
概要	Social cost-benefit analysis (SCBA) appraises public investment projects from the standpoint of society as a whole rather than a private investor. It values inputs and outputs at shadow prices that reflect their true opportunity cost to the economy — correcting market prices for taxes, subsidies, trade distortions, and unemployment — applies distributional weights to gains accruing to different income groups, and discounts the resulting stream of social net benefits at a social discount rate to obtain a net present social value. The modern framework was systematized by Little and Mirrlees and, in parallel, in the UNIDO guidelines of Dasgupta, Sen, and Marglin.	Cost-benefit analysis compares the total monetary value of benefits produced by a program against its total monetary costs, reporting net present value (NPV) or benefit-cost ratio (BCR). Rooted in welfare economics and used extensively in public policy (transportation, environmental, education, health), CBA answers the question: 'Is this program worth doing from a societal perspective?' Unlike cost-effectiveness analysis, CBA monetizes both costs and benefits, enabling comparison across disparate program types.