= Network meta-analysis
A network meta-analysis jointly compares several treatments using a <graph> of direct <Randomized controlled trials> and <indirect treatment comparisons>. If effects are measured relative to a reference treatment, consistency means $\delta_{ij}=\delta_{i0}-\delta_{j0}$. A connected <graph> identifies all relative effects under that model. <Transitivity in network meta-analysis> is the substantive comparability assumption supporting these relations; inconsistency can be assessed when the network has loops.
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