Predictive validity of PMI-1 and PMI-2.

Note: All indicator values were expressed in percentage: sensitivity = true positive/(true positive+false negative); specificity = true negative/(true negative+false positive); positive predictive value (PPV) = true positive/(true positive+false positive); negative predictive value (NPV) = true negative/(true negative+false negative); accuracy = (true positive+true negative)/(true positive+false negative + true negative+false positive). PMI, postoperative myocardial infarction.