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Systematic review : ウィキペディア英語版
Systematic review

A systematic review is a research study that collects and looks at multiple studies. Researchers use methods that are determined before they begin to frame one or more questions, then they find and analyse the studies that relate to that question.〔(【引用サイトリンク】url=http://getitglossary.org/term/systematic+review )〕 Systematic reviews of high-quality randomized controlled trials are crucial to evidence-based medicine. An understanding of systematic reviews and how to implement them in practice is becoming mandatory for all professionals involved in the delivery of health care. Besides health interventions, systematic reviews may concern clinical tests, public health interventions, social interventions, adverse effects, and economic evaluations.〔(Systematic reviews: CRD's guidance for undertaking reviews in health care. ) York: University of York, Centre for Reviews and Dissemination, 2008. ISBN 978-1-900640-47-3. Retrieved 2011-06-17.〕〔Petticrew M, Roberts H. (Systematic reviews in the social sciences ). Wiley Blackwell, 2006.〕 Systematic reviews are not limited to medicine and are quite common in all other sciences where data are collected, published in the literature, and an assessment of methodological quality for a precisely defined subject would be helpful.
==Characteristics==
A systematic review aims to provide an exhaustive summary of current literature relevant to a research question. The first step of a systematic review is a thorough search of the literature for relevant papers. The ''Methodology'' section of the review will list the databases and citation indexes searched, such as Web of Science, Embase, and PubMed, as well as any hand-searched individual journals. Next, the titles and the abstracts of the identified articles are checked against pre-determined criteria for eligibility and relevance. This list will always depend on the research problem. Each included study may be assigned an objective assessment of methodological quality preferably using a method conforming to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement (the current guideline)〔(【引用サイトリンク】title=PRISMA )〕 or the high quality standards of Cochrane collaboration.〔(【引用サイトリンク】title=Cochrane Handbook for Systematic Reviews of Interventions )
Systematic reviews often, but not always, use statistical techniques (meta-analysis) to combine results of the eligible studies, or at least use scoring of the levels of evidence depending on the methodology used. An additional rater may be consulted to resolve any scoring differences between raters.〔 Systematic review is often applied in the biomedical or healthcare context, but it can be applied in any field of research. Groups like the Campbell Collaboration are promoting the use of systematic reviews in policy-making beyond just healthcare.
A systematic review uses an objective and transparent approach for research synthesis, with the aim of minimizing bias. While many systematic reviews are based on an explicit quantitative meta-analysis of available data, there are also qualitative reviews which adhere to the standards for gathering, analyzing and reporting evidence. The EPPI-Centre has been influential in developing methods for combining both qualitative and quantitative research in systematic reviews.
Recent developments in systematic reviews include realist reviews, and the meta-narrative approach. These approaches try to overcome the problems of methodological and epistemological heterogeneity in the diverse literatures existing on some subjects. The PRISMA statement suggests a standardized way to ensure a transparent and complete reporting of systematic reviews, and is now required for this kind of research by more than 170 medical journals worldwide.〔Endorsing PRISMA. http://www.prisma-statement.org/endorsers.htm.〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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