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Transjugular intrahepatic portosystemic shunt patency without interventional revision (Kaplan-Meier method). In the bare stents group 3 patients needed 3 revisions each. More than one revision does not affect the calculation of this graph, thus the total need of revisions in the bare stents group is considerably underestimated in this graphic representation (P = 0.47). TIPS: Transjugular intrahepatic portosystemic shunt.
