Figure 4
![Figure 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1758-5996-6-73/MediaObjects/13098_2014_Article_337_Fig4_HTML.jpg)
Sensitivity analysis across different meta-analysis models. A) HbA1c, weighted mean difference, B) weight (kg), weighted mean difference, C) hypoglycaemia odds ratio; DPP-4, dipeptidyl peptidase-4 inhibitors; direct, direct meta-analysis; FE, fixed-effect; GLP-1, glucagon-like peptide-1 analogues; NMA, network meta-analysis; OR, odds ratio; RE, random-effects; SGLT2, sodium glucose co-transporter 2 inhibitors; WMD, weighted mean difference.