Table 4 Performance metrics
From: Are 5-level triage systems improved by using a symptom based approach?—a Danish cohort study
| Performance metrics | DEPT | VITAL-TRIAGE | Triage categories |
|---|---|---|---|
| 24-h ICU admission | |||
| Sensitivity | 0.79 (CI 0.78: 0.80) | 0.44 (CI 0.41: 0.47) | High-urgency categories |
| Specificity | 0.82 (CI 0.82: 0.82) | 0.96 (CI 0.96: 0.96) | |
| Positive predictive value | 0.05 (CI 0.05: 0.06) | 0.13 (CI 0.12: 0.14) | |
| Negative predictive value | 0.99 (CI 0.99: 0.99) | 0.99 (CI 0.99: 0.99) | |
| 2-day mortality | |||
| Sensitivity | 0.69 (CI 0.67: 0.70) | 0.37 (CI 0.34: 0.41) | High-urgency categories |
| Specificity | 0.81 (CI 0.81: 0.82) | 0.96 (CI 0.96: 0.96) | |
| Positive predictive value | 0.02 (CI 0.02: 0.03) | 0.06 (CI 0.06: 0.07) | |
| Negative predictive value | 0.99 (CI 0.99: 0.99) | 0.99 (CI 0.99: 0.99) | |
| Critical illness | |||
| Sensitivity | 0.48 (CI 0.47: 0.50) | 0.09 (0.08: 0.10) | High-urgency categories |
| Specificity | 0.85 (CI: 0.84: 0.85) | 0.96 (CI 0.96: 0.96) | |
| Positive predictive value | 0.05 (CI 0.04: 0.05) | 0.06 (CI 0.06: 0.07) | |
| Negative predictive value | 0.99 (CI 0.99: 0.99) | 0.97 (CI 0.97: 0.97) | |
| Surgery within 48 h | |||
| Sensitivity | 0.30 (CI 0.30: 0.31) | 0.04 (CI 0.04: 0.04) | High-urgency categories |
| Specificity | 0.82 (CI 0.82: 0.82) | 0.96 (CI 0.95: 0.96) | |
| Positive predictive value | 0.16 (CI 0.16: 0.16) | 0.12 (CI 0.11: 0.13) | |
| Negative predictive value | 0.92 (CI 0.92: 0.92) | 0.87 (CI 0.87: 0.87) | |
| 4-h discharge | |||
| Sensitivity | 0.91 (CI 0.91: 0.92) | 0.99 (CI 0.99: 0.99) | Low-urgency categories |
| Specificity | 0.29 (CI 0.29: 0.29) | 0.06 (CI 0.06: 0.06) | |
| Positive predictive value | 0.56 (CI 0.56: 0.56) | 0.33 (CI 0.32: 0.33) | |
| Negative predictive value | 0.78 (CI 0.77: 0.78) | 0.91 (CI 0.90: 0.92) |