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ROC curves of hs-cTnI, and the revised cardiac index ‘Lee index’ for the combined endpoint (A) and in-hospital mortality (B). The area under the ROC curve assessing hs-cTnI in predicting in-hospital mortality and combined point were larger than Lee index (0·787 versus 0·698, P < 0·001 and 0·822 versus 0·627, P = 0·249).
