Table 2

Predictive performance of near-term mortality by random forest classifier

Number of feature vectors# samples labelled positive for near-term mortality (%)Sensitivity (%)Specificity (%)Accuracy (%)Positive predictive value (%)Negative predictive value (%)Area under ROC (%)Area under PR (%)
Test set 41474 (17.9)87.8 (78.2–94.3)60.6 (55.2–65.8)65.5 (60.7–70)32.7 (26.2–39.7)95.8 (92.2–98.1)85.5 (80.8–90.2)64.4 (53.5–75.3)
  • PR, precision recall; ROC, receiver operating characteristic.