Article Figures & Tables
Figures
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.
Box 1: Potential reasons for incoherence between the results of direct and indirect comparisons
Box 2: Key features in the critical reading of umbrella reviews
Box 3: Key considerations in the analysis of treatment networks and multiple treatments meta-analyses