Fig. 1From: Hierarchical network meta-analysis models for synthesis of evidence from randomised and non-randomised studiesNetwork plots for the network meta-analysis of HbA1c (%) at 24 weeks and 52 weeks. Nodes represent treatments with sizes of the nodes proportional to the number of participants and the lines represent the direct comparisons between any two treatments with the width of the line proportional to the number of studies per contrastBack to article page