3 A systematic review is a 'review of a clearly formulated question that uses systematic and explicit methods to identify, select and critically appraise relevant research and to collect and analyse data from studies that are included in the review'.
17 A systematic review is a review of a clearly formulated question that uses systematic and explicit methods to identify, select, and critically appraise relevant research, and to collect and analyse data from the studies that are included in the review.
A systematic review was defined as used by the Cochrane Collaboration and the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Statement: "A review of a clearly formulated question that uses systematic and explicit methods to identify, select, and critically appraise relevant research, and to collect and analyse data from the studies that are included in the review.
In this sense, systematic reviews are widely and successfully used in the medical sciences to provide an answer to a clearly formulated question and might be of practical use here [ 18].
A systematic review is a summary of individual studies addressing a clearly formulated question that uses systematic and explicit methods to identify, select, and critically appraise the relevant research, and to collect and analyse data from the included studies.
A well conducted systematic review addresses a carefully formulated question by analyzing all available evidence.
From there, explicit approaches that harness expertise to a rigorous, transparent, and systematic methodology to evaluate a clearly formulated question were advanced, and are now embodied in prominent empirically demonstrated methods such as the Cochrane Collaboration (Higgins and Green 2011) and Grading of Recommendations Assessment, Development and Evaluation (GRADE) (Guyatt et al. 2008b).
For example, the NICE reference case states that "evidence on outcomes should be obtained from a systematic review, defined as the systematic location, inclusion, appraisal and synthesis of evidence to obtain a reliable and valid overview of the data related to a clearly formulated question….
They dawdle endlessly in ignorance when a cleanly formulated question or two would clear up some things pretty quickly.
According to the definitions used by The Cochrane Collaboration, a systematic review is the process of collecting, reviewing, and presenting all available evidence related to a clearly formulated question that uses systematic and explicit methods (3, 4).
However, starting in the 1970s, the role of expert reviews began to be questioned for a number of reasons (e.g., potential bias of experts, timeliness of information); this led to the development of systematic approaches that would use rigorous, transparent, and explicit methodology to evaluate a clearly formulated question.
