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The TAVI Markov model. AVR, aortic valve replacement; ST, standard therapy; TAVI, transcatheter aortic valve implantation. The green square is a choice node, the red dots are chance nodes and the blue triangles are end nodes. Etc.: this indicates that if the patient survives, he goes to the next cycle in the Markov model. In each monthly cycle, the patient is again at risk of dying, being hospitalised, having other events or no event.
