qSOFA: screening performance characteristics for mortality at 72 hours
| Criteria | Sensitivity, % (95% CI) | Specificity, % (95% CI) | Negative predictive value, % (95% CI) | Negative likelihood ratio (95% CI) | Positive predictive value, % (95% CI) | Positive likelihood ratio (95% CI) |
| qSOFA ≥1 TP=38 TN=1896 FP=1802 FN=7 | 84.4 (69.9 to 93.0) | 51.3 (49.6 to 52.9) | 99.6 (99.2 to 99.8) | 0.30 (0.15 to 0.60) | 2.1 (1.5 to 2.9) | 1.7 (1.5 to 2.0) |
| qSOFA ≥2 TP=29 TN=3101 FP=597 FN=16 | 64.4 (48.7 to 77.7) | 83.9 (82.6 to 85.0) | 99.5 (99.1 to 99.7) | 0.42 (0.29 to 0.63) | 4.6 (3.2 to 6.7) | 4.0 (3.2 to 5.0) |
| qSOFA ≥3 TP=17 TN=3569 FP=129 FN=28 | 37.8 (24.2 to 53.5) | 96.5 (95.9 to 97.1) | 99.2 (98.9 to 99.5) | 0.64 (0.51 to 0.81) | 11.6 (7.1 to 18.3) | 10.8 (7.2 to 16.3) |
qSOFA, quick sequential organ failure assessment; TP, true positive; TN, true negative; FP, false positive; FN, false negative.