How many studies should be included in a systematic review?

Question

Basically, there is no limit on number of studies for a systematic review. For a meta-analysis, you can practically do it with 2 or more. However, generally speaking, a MA of less than 4 or 5 studies of controversial benefit. 22 сент. 2015 г.

What is a good sample size for a systematic review?

When assessing whether sample sizes were adequate, the majority of studies (90-98%) were well powered to detect large effect sizes (2.0 SD) for one mean. However, few studies were adequately powered to detect smaller (and arguably more realistic) effect sizes (0.2-1.0 SD).

How many results does a systematic review have?

There is no such limit. In a systematic review, you are supposed to find ALL studies that meet the study eligibility criteria for your research question. For example, we are currently evaluating 5173 search hits in a systematic review.

What should be included in a systematic review?

The steps necessary to perform a systematic review are fully explained, including the study purpose, search methodology, data extraction, reporting of results, identification of bias, and reporting of the study's main findings.

Should case studies be included in a systematic review?

It certainly is appropriate to include all kinds of studies in a systematic review.

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