As a type of systematic review, this review type is methodologically rigorous, with a specific research question, established inclusion and exclusion criteria, a clearly described search strategy and data analysis approach, and a critical appraisal of the quality of the data set. The purpose of a meta-synthesis is to help the expand or produce new understanding of a topic or phenomenon associated with the research question. The meta-synthesis, also a type of systematic review, is intended to locate, evaluate, and synthesize qualitative data centered on a specific research question.
Thus, meta-analysis are outcome-based and examine the efficacy of an intervention. This generates an overall effect of one type of intervention over another. A meta-analysis has the same characteristics and processes of a systematic review, with one addition-the analysis of the studies includes a statistical technique that allows study outcomes to be combined. There are several types of systematic reviews, including the meta-analysis and the meta-synthesis. If not, a different type of review such as a scoping review may be the more appropriate approach. As such, there needs to be an adequate number of studies in the data set related to the research question. The end result of a systematic review is to provide evidence-based answers to the identified research question. A systematic review should describe the search strategy and data analysis approach and include a critical appraisal of the quality of the research included in the data set. It involves a methodologically rigorous process-there should be a clearly formulated research question, as well as inclusion and exclusion criteria to delineate the type of research article appropriate for the data set. The systematic review is a stand-alone research study designed to locate, evaluate, and synthesize research evidence based on a specific research question related to clinical practice, research, or policy.
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