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Review
. 2009 Oct 13;181(8):488-93.
doi: 10.1503/cmaj.081086. Epub 2009 Aug 4.

Integration of evidence from multiple meta-analyses: a primer on umbrella reviews, treatment networks and multiple treatments meta-analyses

John P A Ioannidis  1
Affiliations
Review

Integration of evidence from multiple meta-analyses: a primer on umbrella reviews, treatment networks and multiple treatments meta-analyses

John P A Ioannidis. CMAJ. .
No abstract available

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Figures

Figure 1
Figure 1
Schematic representations of (A) an umbrella review encompassing 13 comparisons involving 8 treatment options (7 active treatments and a placebo) and (B) a network with the same data. Each treatment is shown by a node of different colour, and comparisons between treatments are shown with links between the nodes. Each comparison may have data from several studies that may be combined in a traditional meta-analysis.
See this image and copyright information in PMC

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