পদ্ধতির তুলনা করুন

	Rapid Evidence Assessment	Ex-Ante Policy Appraisal
ক্ষেত্র	Public Policy	Public Policy
পরিবার	Process / pipeline	Process / pipeline
উদ্ভবের বছর	2013	2022
প্রবর্তক	UK Government Social Research Service with the EPPI-Centre	Public-finance appraisal tradition; codified by HM Treasury (Green Book)
ধরন	Time-constrained systematic evidence synthesis	Structured ex-ante appraisal of policy options
মৌলিক উৎস	Government Social Research Service (2013). Rapid Evidence Assessment Toolkit. London: Civil Service / GSR, developed with the EPPI-Centre.	HM Treasury (2022). The Green Book: Central Government Guidance on Appraisal and Evaluation. London: HM Treasury.
অপর নাম	REA, Rapid Evidence Review, Rapid Evidence Synthesis	Policy Appraisal, Options Appraisal, Green Book Appraisal
সম্পর্কিত	2	4
সারসংক্ষেপ	A rapid evidence assessment (REA) is a way of getting on top of the available research evidence on a policy question as comprehensively as possible within the constraints of a short timetable. It uses the systematic and transparent methods of a full systematic review — explicit search strategies, inclusion criteria and quality appraisal — but deliberately limits the breadth of one or more stages to fit the time and resources available. Promoted in the UK by the Government Social Research Service and the EPPI-Centre, the REA was designed to give policymakers rigorous, accountable evidence syntheses on timescales that conventional systematic reviews cannot meet.	Ex-ante policy appraisal is the structured assessment of the costs, benefits, risks and trade-offs of alternative options for achieving a policy objective, carried out before a decision is taken. Codified in guidance such as the UK Treasury's Green Book, it provides a disciplined framework for deciding whether to intervene and, if so, how — by establishing the rationale and objectives, generating and narrowing a range of options, appraising each against a counterfactual, and recommending the option that offers best value for public money. Appraisal is the forward-looking complement to ex-post evaluation, which judges interventions after they have run.