Bandingkan kaedah

	Tinjauan Payung Berasaskan Protokol	Tinjauan Payung Patuh PRISMA
Bidang	Saintometrik	Saintometrik
Keluarga	Process / pipeline	Process / pipeline
Tahun asal	2011-2015 (PROSPERO launched 2011; JBI umbrella review guidelines 2015)	2015 (umbrella review methodology); 2022 (PRIOR reporting extension)
Pengasas	Developed from umbrella review methodology; protocol registration practice formalized through PROSPERO (York) and JBI	Aromataris et al. (JBI); PRIOR reporting extension by Fusar-Poli et al.
Jenis	Registered evidence synthesis review	Evidence synthesis / review of systematic reviews
Sumber perintis	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.	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 approach. International Journal of Evidence-Based Healthcare, 13(3), 132–140.
Alias	pre-registered umbrella review, prospero-registered umbrella review, registered overview of reviews, protocol-driven umbrella review	umbrella review with PRISMA, PRIOR-guided umbrella review, overview of reviews, PRISMA umbrella overview
Berkaitan	5	5
Ringkasan	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 PRISMA-compliant umbrella review is a structured synthesis of existing systematic reviews and meta-analyses on a topic, conducted and reported in accordance with the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines — specifically the PRIOR extension developed for umbrella reviews. By operating one level above primary research, it maps the totality of evidence, identifies convergent or contradictory findings across reviews, and quantifies evidence strength at the highest tier of the evidence hierarchy.