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A systematic review is a scholarly synthesis of the evidence on a clearly presented topic using critical methods to identify, define and assess research on the topic. [1] A systematic review extracts and interprets data from published studies on the topic (in the scientific literature), then analyzes, describes, critically appraises and summarizes interpretations into a refined evidence-based ...
The PRISMA flow diagram, depicting the flow of information through the different phases of a systematic review. PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) is an evidence-based minimum set of items aimed at helping scientific authors to report a wide array of systematic reviews and meta-analyses, primarily used to assess the benefits and harms of a health care ...
A meta-analysis is usually preceded by a systematic review, as this allows identification and critical appraisal of all the relevant evidence (thereby limiting the risk of bias in summary estimates). The general steps are then as follows: [ 21 ]
Umbrella review. In medical research, an umbrella review is a review of systematic reviews or meta-analyses. [1][2][3] They may also be called overviews of reviews, reviews of reviews, summaries of systematic reviews, or syntheses of reviews. [1] Umbrella reviews are among the highest levels of evidence currently available in medicine.
Cochrane Library. The Cochrane Library (named after Archie Cochrane) is a collection of databases in medicine and other healthcare specialties provided by Cochrane and other organizations. At its core is the collection of Cochrane Reviews, a database of systematic reviews and meta-analyses which summarize and interpret the results of medical ...
PICO process. The PICO process (or framework) is a mnemonic used in evidence-based practice (and specifically evidence-based medicine) to frame and answer a clinical or health care related question, [1] though it is also argued that PICO "can be used universally for every scientific endeavour in any discipline with all study designs". [2]
There are various categories of review articles, including narrative reviews, systematic reviews, and meta-analysis. Review articles do not introduce new results, but rather state existing results, drawing conclusions on the results presented. Review articles can be categorised by using the same domain, underlying theory, or research method. [4]
Such reviews should be more reliable and accurate and less prone to bias than a narrative review. [11] Systematic reviews and meta-analyses of randomized controlled trials can provide strong evidence of the clinical efficacy of particular treatments in given scenarios, which may, in turn, be incorporated into medical guidelines or institutional ...