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Diagnostic accuracy measures for mortality prediction at several cut-offs of the 4C score.
| 4C cut-off | Prevalence (%) | Sensitivity (%) | Specificity (%) | Positive predictive value (%) | Negative predictive value (%) | Positive likelihood ratio | Negative likelihood ratio |
|---|---|---|---|---|---|---|---|
| > 3 | 92.2 | 100.0 | 10.2 | 25.3 | 100.0 | 1.11 | 0.00 |
| > 8 | 66.0 | 91.0 | 41.6 | 32.2 | 93.8 | 1.56 | 0.22 |
| > 11 | 37.7 | 68.9 | 71.8 | 42.7 | 88.3 | 2.44 | 0.43 |
| > 14 | 12.2 | 28.3 | 92.7 | 54.2 | 80.9 | 3.89 | 0.77 |
