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Table 3 Comparison between GRACE score, NOESY RF score and a linear combination of NOESY RF and GRACE scores (GRACE + NOESY RF scores)

From: NMR-based metabolomics identifies patients at high risk of death within two years after acute myocardial infarction in the AMI-Florence II cohort

  GRACE score NOESY RF score GRACE + NOESY RF scores
Training set
 AUC (95% CI) 0.815 (0.794-0.820) 0.859 (0.858-0.860) 0.875 (0.864-0.885)
 Harrell’s c index 0.776 (0.761-0.781) 0.806 (0.805-0.809) 0.828 (0.821-0.835)
Validation set,
 AUC 0.756 (0.754-0.758) 0.801 (0.800-0.802) 0.823 (0.822-0.825)
 Harrell’s c index 0.740 (0.744-0.747) 0.789 (0.789-0.790) 0.809 (0.808-0.810)
  1. GRACE Global Registry of Acute Coronary Events, NOESY nuclear Overhauser effect spectroscopy, RF random forest, AUC area under the receiver operating characteristic, CI confidence interval
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