Comparar métodos

	Revisão Guarda-Chuva em Conformidade com PRISMA	Revisão Guarda-Chuva
Área	Cientometria	Síntese de evidências
Família	Process / pipeline	Process / pipeline
Ano de origem	2015 (umbrella review methodology); 2022 (PRIOR reporting extension)	2009
Autor original	Aromataris et al. (JBI); PRIOR reporting extension by Fusar-Poli et al.	Grant & Booth (2009), Refined by AMSTAR-2 (Shea et al., 2017)
Tipo	Evidence synthesis / review of systematic reviews	Framework
Fonte seminal	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.	Grant, M. J., & Booth, A. (2009). A typology of reviews: An analysis of 14 review types and associated methodologies. Health Information & Libraries Journal, 26(2), 91–108.
Outros nomes	umbrella review with PRISMA, PRIOR-guided umbrella review, overview of reviews, PRISMA umbrella overview	Overview of Reviews, Meta-Review, Review of Reviews
Relacionados	5	2
Resumo	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.	An umbrella review is a systematic synthesis of multiple systematic reviews addressing overlapping or related research questions, typically on the same topic or intervention. Also called a 'review of reviews' or 'overview of reviews,' umbrella reviews consolidate evidence when two or more high-quality systematic reviews exist on the same clinical question. Grant and Booth (2009) formally categorized this methodology; Shea et al. (2017) developed AMSTAR-2, the critical appraisal tool for assessing the quality of included reviews. Umbrella reviews are essential when numerous systematic reviews produce conflicting conclusions, when rapid synthesis of evidence is needed for policy or clinical guidance, or when evidence has accumulated faster than any single systematic review can capture.