Table 3 Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV) and 95% confidence intervals (CI) at different risk score cut points, Hospital (1) sample
Risk score cut point | Sensitivity | Specificity | PPV | NPV | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Â | Â | 95% CI | Â | % | 95% CI | Â | % | 95% CI | Â | % | 95% CI | Â |
> 0.1 | 90.0 | 68.3 | 98.8 | 38.1 | 23.6 | 54.4 | 40.9 | 26.3 | 56.8 | 88.9 | 65.3 | 98.6 |
> 0.2 | 90.0 | 68.3 | 98.8 | 52.4 | 36.4 | 68 | 47.4 | 31.0 | 64.2 | 91.7 | 73.0 | 99 |
> 0.3 | 75.0 | 50.9 | 91.3 | 71.4 | 55.4 | 84.3 | 55.6 | 35.3 | 74.5 | 85.7 | 69.7 | 95.2 |
> 0.4 | 70.0 | 45.7 | 88.1 | 83.3 | 68.6 | 93.0 | 66.7 | 43.0 | 85.4 | 85.4 | 70.8 | 94.4 |
> 0.45 | 65.0 | 40.8 | 84.6 | 85.7 | 71.5 | 94.6 | 68.4 | 43.4 | 87.4 | 83.7 | 69.3 | 93.2 |
> 0.5 | 55.0 | 31.5 | 76.9 | 88.1 | 74.4 | 96.0 | 68.8 | 41.3 | 89.0 | 80.4 | 66.1 | 90.6 |
> 0.6 | 35.0 | 15.4 | 59.2 | 95.2 | 83.8 | 99.4 | 77.8 | 40.0 | 97.2 | 75.5 | 61.7 | 86.2 |
> 0.7 | 10.0 | 1.2 | 31.7 | 97.6 | 87.4 | 99.9 | 66.7 | 9.4 | 99.2 | 69.5 | 56.1 | 80.8 |
> 0.8 | 0.0 | 0.0 | 16.8 | 97.6 | 87.4 | 99.9 | 0.0 | 0.0 | 97.5 | 67.2 | 54.0 | 78.7 |