"The intent of this kind of review is to include systematic reviews or meta-analyses as the main study type and thus examine only the highest level of evidence."
"The aim is not to repeat the searches, assess study eligibility, and assess risk of bias from included studies but rather to provide an overall picture of findings."
Source: Blackwood D (2016)
Overviews of Reviews are used:
Systematic Review of Systematic Reviews, Umbrella Review, Review of Reviews, Summary of Systematic Reviews, Synthesis of Reviews, Review of Systematic Reviews, Review of Reviews, Review of Meta-analyses, Meta-review, Systematic Meta-review
Adapted with permission from Temple University Libraries. https://guides.temple.edu/systematicreviews