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Table 4 Comparison of predictive performance in receiver operating characteristic analysis

From: Development of a heart rate variability and complexity model in predicting the need for life-saving interventions amongst trauma patients

  HRV/HRC model T-RTS MEWS M-GAP GAP GCS Heart rate GCS + heart rate
Cut-off 0.18 12 2 27 22 15 84.5 0.18
AUC (95% CI) 0.75 (0.66–0.83) 0.62 (0.53–0.71) 0.69 (0.60–0.78) 0.64 (0.55–0.73) 0.61 (0.52–0.70) 0.39 (0.29–0.48) 0.61 (0.52–0.71) 0.65 (0.56–0.75)
Sensitivity %, (95% CI) 79.6% (68.3–90.9) 28.6% (15.9–41.2) 26.5% (14.2–38.9) 55.1% (41.2–69.0) 38.8% (25.1–52.4) 65.3% (58.9–78.2) 63.3% (48.3–76.6) 57.1% (42.2–71.2)
Specificity %, (95% CI) 63.1% (55.9–70.2) 94.3% (90.9–97.7) 96.6% (93.9–99.3) 61.4% (54.2–68.6) 68.2% (61.3–75.1) 14.9% (11.3–21.9) 51.0% (42.9–58.2) 61.0% (52.6–67.5)
PPV %, (95% CI) 37.5% (28.2–46.8) 58.3% (38.6–78.1) 68.4% (47.5–89.3) 28.4% (19.4–37.5) 25.3% (15.5–35.2) 38.6% (27.3–51.4) 26.3% (21.5–31.6) 28.6% (22.8–35.1)
NPV %, (95% CI) 91.7% (86.8–96.6) 82.6% (77.3–87.8) 82.5% (77.3–87.7) 83.1% (76.6–89.5) 80.0% (73.6–86.4) 82.3% (79.0–85.2) 83.2% (76.9–88.0) 83.5% (78.1–87.7)
  1. HRV heart rate variability, HRC heart rate complexity, T-RTS Triage Revised Trauma Score, MEWS Modified Early Warning System, M-GAP Mechanism of injury, Glasgow Coma Scale, Age and Arterial blood pressure, GAP Glasgow coma scale, Age and Systolic blood pressure, AUC area under the curve, CI confidence interval, PPV positive predictive value, NPV negative predictive value, GCS Glasgow Coma Scale