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ROC analysis of total bilirubin as a prognostic predictor in inoperable chronic thromboembolic pulmonary hypertension patients. ROC demonstrating that a cut-off for total bilirubin level of 23.7 μmol/L results in a sensitivity of 77% and a specificity of 78% for predicting mortality in inoperable chronic thromboembolic pulmonary hypertension patients. ROC: Receiver operating characteristic curve; AUC: Area under the curve.
