Fig. 3
![Fig. 3](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13643-015-0133-0/MediaObjects/13643_2015_133_Fig3_HTML.gif)
Combining and comparing findings from network meta-analysis using randomized controlled trials and non-randomized comparative cohort studies. We assume for this example a network which consists of four treatments, namely A, B, C, and D. NMA network meta-analysis, NRS non randomized studies, RCT randomized controlled trials