The purpose of a systematic review is to locate and synthesize all the scholarly research studies on a specific topic. A systematic review uses systematic processes and procedures to find, evaluate, and synthesize the results of the research. Systematic procedures are carefully followed to ensure that the research is transparent and can be replicated. This also minimizes bias.
A systematic review has:
Systematic analysis of included studies
Exhaustive systematic searching requires using a combination of more than one search strategy.