Performance characteristics of NHSIII PEWS score ≥2
| Data analysed | Sensitivity 95% CI | Specificity 95% CI | Positive predictive value 95% CI | Negative predictive value 95% CI | Positive likelihood ratio 95% CI | Negative likelihood ratio 95% CI | Area under the curve 95% CI |
|---|---|---|---|---|---|---|---|
| All data—all ages | 73.2% 62.2 to 82.4 | 75.2% 74.3 to 76.1 | 2.6% 2.0 to 3.4 | 99.7% 99.5 to 99.8 | 3.0 2.6 to 3.4 | 0.36 0.25 to 0.51 | 0.83 0.77 to 0.88 |
| All data—0–11 months | 45.5% 28.1 to 63.7 | 82.2% 80.9 to 83.5 | 2.4% 1.4 to 3.9 | 99.4% 99.0 to 99.6 | 2.6 1.8 to 3.8 | 0.66 0.49 to 0.91 | 0.74 0.66 to 0.82 |
| All data—14 years | 87.5% 67.6 to 97.3 | 68.0 66.4 to 69.6 | 2.0% 1.2 to 3.0 | 99.9% 99.6 to 100 | 2.7 2.3 to 3.2 | 0.18 0.06 to 0.53 | 0.85 0.75 to 0.96 |
| All data—5–12 years | 96.0% 79.7 to 99.9 | 76.0% 73.4 to 78.5 | 8.3% 5.4 to 12.1 | 99.9% 99.3 to 100 | 4.0 3.5 to 4.6 | 0.05 0.01 to 0.36 | 0.97 0.93 to 1.00 |
| Complete data—all ages | 80.0% 28.4 to 99.5 | 81.0% 77.2 to 84.5 | 4.3% 1.2 to 10.5 | 99.7% 98.6 to 100 | 4.2 2.6 to 6.8 | 0.25 0.04 to 1.43 | 0.88 0.77 to 0.99 |
Analysis on restricted datasets.
No adverse outcomes occurred in children over 12 years of age, so performance characteristics cannot be calculated for the fourth age group defined in the NHSIII PEWS.
NHSIII, National Health Service Institute for Innovation and Improvement; PEWS, Paediatric Early Warning System.