Can you do a systematic review with one database?

Question

Typically at least three databases are used for a systematic review. A list of most commonly used databases appears on this page, but there may be others to consider depending upon the topic. When conducting a systematic review, a thorough search strategy is necessary.

Is it best to gather information from one database for a systematic review?

Some concluded that searching only one database can be sufficient as searching other databases has no effect on the outcome [16, 17]. Nevertheless others have concluded that a single database is not sufficient to retrieve all references for systematic reviews [18, 19].

Which database is used for systematic review?

Cochrane, which is considered the gold standard for clinical systematic reviews, recommends searching the following three databases, at a minimum: PubMed, Embase, and Cochrane Central Register of Controlled Trials (CENTRAL).

Can a systematic review be done by one person?

Team members independently evaluate the studies being considered for inclusion in the review and compare results, adjudicating any differences of opinion. In contrast, a systematic literature review might be conducted by one person.

How many papers do I need for a systematic review?

There is no minimum number of studies to be included in systematic review, but if one wish to do meta-analysis, at least two studies are required to sum-up the data and synthesis the evidences that will add some new evidence and knowledge in current knowledge.

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