Accuracy outcomes of the NTS and final high urgency allocation (U1/U2) against ACS or other LTEs (ACS/LTE prevalence 14.1%)
| Accuracy outcomes | NTS high urgency Value (95% CI) | Final high urgency Value (95% CI) |
| Sensitivity | 0.73 (0.68 to 0.78) | 0.86 (0.81 to 0.90) |
| Specificity | 0.43 (0.40 to 0.45) | 0.34 (0.32 to 0.37) |
| Positive predictive value | 0.17 (0.16 to 0.19) | 0.18 (0.17 to 0.19) |
| Negative predictive value | 0.91 (0.89 to 0.92) | 0.94 (0.92 to 0.95) |
ACS, acute coronary syndrome; LTE, life-threatening event; NTS, Netherlands Triage System.