I am planning to conduct a network meta-analysis - encompassing at least 10 different medications - to compare their superiority in improving a health-related outcome.
Let's suppose the medications are W, X, Y, and Z.
Paper 1 reports outcome A for Drug W
Paper 2 reports outcome A for Drug X
Paper 3 reports outcome A for Drug Y
Paper 4 reports outcome A for Drug Z
No available papers directly compare outcomes among any of the medications.
Is it possible to conduct a network meta-analysis in this case? What are the preliminary requisites to conduct a network meta-analysis?
Thank you.