Fig. 3From: The comparative effectiveness of migraine preventive drugs: a systematic review and network meta-analysisNetwork geometry for 50% or more reduction in monthly migraine days. Each node represents a drug that has been tested in trials. The edges represent direct comparisons of the drugs in trials. The size of the nodes is proportional to the number of patients that have received that drug, and the thickness of the edges is proportional to the number of trialsBack to article page