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- W2982816732 abstract "Abstract Background A standard or consensus definition of a systematic review does not exist. Therefore, if there is no definition about a systematic review in secondary studies that analyse them or the definition is too broad, inappropriate studies might be included in such evidence synthesis. The aim of this study was to analyse the definition of a systematic review (SR) in health care literature, elements of the definitions that are used and to propose a starting point for an explicit and non-ambiguous SR definition. Methods We included overviews of systematic reviews (OSRs), meta-epidemiological studies and epidemiology textbooks. We extracted the definitions of SRs, as well as the inclusion and exclusion criteria that could indicate which definition of a SR the authors used. We extracted individual elements of SR definitions, categorised and quantified them. Results Among the 535 analysed sources of information, 188 (35%) provided a definition of a SR. The most commonly used reference points for the definitions of SRs were Cochrane and the PRISMA statement. We found 188 different elements of SR definitions and divided them into 14 categories. The highest number of SR definition elements was found in categories related to searching ( N = 51), analysis/synthesis ( N = 23), overall methods ( N = 22), quality/bias/appraisal/validity ( N = 22) and aim/question ( N = 13). The same five categories were also the most commonly used combination of categories in the SR definitions. Conclusion Currently used definitions of SRs are vague and ambiguous, often using terms such as clear, explicit and systematic, without further elaboration. In this manuscript we propose a more specific definition of a systematic review, with the ultimate aim of motivating the research community to establish a clear and unambiguous definition of this type of research." @default.
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- W2982816732 date "2019-11-04" @default.
- W2982816732 modified "2023-10-14" @default.
- W2982816732 title "Definition of a systematic review used in overviews of systematic reviews, meta-epidemiological studies and textbooks" @default.
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- W2982816732 doi "https://doi.org/10.1186/s12874-019-0855-0" @default.
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