Table 3

Performance characteristics of each NHSIII PEWS score

Adverse outcomeNo adverse outcomePerformance characteristics
NHSIII PEWS scoreScore above thresholdScore below thresholdScore above thresholdScore below thresholdSensitivity
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
≥17575413358091.5%
83.2 to 96.5
39.8%
38.8 to 40.8
1.4%
1.1 to 1.7
99.8%
99.7 to 99.9
1.5
1.4 to 1.6
0.21
0.11 to 0.44
≥260222230676373.2%
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
≥34834248874558.5%
47.1 to 69.3
97.2%
96.9 to 97.6
16.2%
12.2 to 20.9
99.6%
99.5 to 99.7
21.2
17.0 to 26.4
0.43
0.33 to 0.55
≥4216145894825.6%
16.6 to 36.4
99.5%
99.3 to 99.6
31.8%
20.9 to 44.4
99.3%
99.1 to 99.5
51.2
32.0 to 81.9
0.75
0.66 to 0.85
≥5156714897918.3%
10.6 to 28.4
99.8%
99.7 to 99.9
51.7%
32.5 to 70.6
99.3%
99.1 to 99.4
116.2
58.0 to 232.9
0.82
0.74 to 0.91
≥6082189920.0%
0.0 to 4.4
100.0%
99.9 to 100
0.0%
0.0 to 97.5
99.1%
98.9 to 99.3
0.01.00
  • NHSIII, National Health Service Institute for Innovation and Improvement; PEWS, Paediatric Early Warning System.