手法を比較

	プロトコルに基づくアンブレラレビュー	スコーピングレビュー
分野	科学計量学	科学計量学
系統	Process / pipeline	Process / pipeline
提唱年	2011-2015 (PROSPERO launched 2011; JBI umbrella review guidelines 2015)	2005
提唱者	Developed from umbrella review methodology; protocol registration practice formalized through PROSPERO (York) and JBI	Hilary Arksey & Lisa O'Malley
種類	Registered evidence synthesis review	Evidence synthesis review design
原典	Aromataris, E., Fernandez, R., Godfrey, C. M., Holly, C., Khalil, H., & Tungpunkom, P. (2015). Summarizing systematic reviews: methodological development, conduct and reporting of an umbrella review. JBI Evidence Implementation, 13(3), 132-140.	Arksey, H., & O'Malley, L. (2005). Scoping studies: towards a methodological framework. International Journal of Social Research Methodology, 8(1), 19–32.
別名	pre-registered umbrella review, prospero-registered umbrella review, registered overview of reviews, protocol-driven umbrella review	scoping study, literature scoping, evidence mapping review, rapid evidence map
関連	5	6
概要	A protocol-based umbrella review is an umbrella review — a synthesis of existing systematic reviews and meta-analyses on a common topic — conducted under a publicly pre-registered protocol, typically in PROSPERO or a similar registry. Pre-registering the protocol before data collection begins commits the research team to prospectively defined eligibility criteria, search strategy, appraisal tools, and synthesis methods, sharply reducing the risk of outcome reporting bias and post-hoc analytical flexibility.	A scoping review is a systematic evidence-synthesis method that maps the breadth and nature of research on a topic — identifying key concepts, evidence types, and gaps — without necessarily appraising study quality or pooling effect sizes. Developed by Arksey and O'Malley (2005) and refined by Levac and colleagues (2010), it is particularly valuable for emerging or heterogeneous fields where a full systematic review would be premature or infeasible.