"...a synopsis that summarizes the findings of a high-quality systematic review can often provide sufficient information to support clinical action..." (DiCenso et al., 2009)
Summary & analysis of Systematic Review of Meta-Analysis.
The following databases provide both synopses of syntheses (Level 3) and synopses of studies (Level 5)
Level 3 examples - see Level 4 examples for the reviews that are synopsized here
example 1 (from DARE) | example 2 (from DARE)