Threshold | Specificity, 95% CI (%) | Positive predictive value, 95% CI (%) | Patients with non-cardiac symptoms identified (%) |
---|---|---|---|
95th centile (≥160 s) | 100 (96.6 to 100) | 100 (83.9 to 100) | 6.4 (21/330) |
90th centile (≥138 s) | 98.1 (93.3 to 99.8) | 95.4 (84.2 to 99.4) | 12.4 (41/330) |
80th centile (≥117 s) | 88.6 (80.9 to 94.0) | 86.2 (77.2 to 92.7) | 22.7 (75/330) |