Porovnať metódy

	Systematická stratégia vyhľadávania	Vyhľadávanie sivej literatúry
Odbor	Výskumné zručnosti	Výskumné zručnosti
Rodina	Process / pipeline	Process / pipeline
Rok vzniku	1990s (formalized in Cochrane methodology)	1990s (formalized in systematic review guidelines)
Tvorca	Cochrane Collaboration and systematic review methodologists	Information specialists and systematic review methodologists (Cochrane Collaboration, Health Technology Assessment)
Typ	Framework	Tool
Pôvodný zdroj	Moher, D., Liberati, A., Tetzlaff, J., & Altman, D. G. (2009). Preferred Reporting Items for Systematic Reviews and Meta-Analyses: The PRISMA statement. PLoS Medicine, 6(7), e1000097.	Rothstein, H. R., & Hopewell, S. (2009). Grey literature. In J. P. Higgins & S. Green (Eds.), Cochrane handbook for systematic reviews of interventions (Version 5.0.2, Chapter 13). The Cochrane Collaboration.
Ďalšie názvy	search protocol, systematic search, comprehensive search strategy	grey literature, gray literature, unpublished literature
Príbuzné	3	3
Zhrnutie	A systematic search strategy is a comprehensive, transparent protocol for retrieving all relevant literature addressing a well-defined research question. Developed by the Cochrane Collaboration and formalized in guidelines like PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses), systematic search strategies are essential for conducting unbiased literature reviews, systematic reviews, and meta-analyses. Unlike ad hoc searches (searching Google Scholar or PubMed without a protocol), systematic searches document every step—which databases were searched, what search terms were used, how many results were retrieved, and what inclusion/exclusion criteria were applied—enabling other researchers to reproduce the search and verify that no relevant studies were missed.	Grey literature comprises documents and data not published through conventional commercial channels—including theses, government reports, clinical trial registries, conference abstracts, organizational policy documents, and working papers. Unlike journal articles, grey literature is not indexed in MEDLINE or Scopus and often lacks peer review. However, it is crucial for systematic reviews because it may contain null or negative findings that are less likely to be published (publication bias). Systematic grey literature searching is now a standard component of evidence synthesis and is recommended by the Cochrane Collaboration, PRISMA, and other methodological guidelines.