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ROC positive and negative likelihood ratiosa
| Positive likelihood | Lower 0.95 | Upper 0.95 | Negative likelihood | Lower 0.95 | Upper 0.95 | |
| SOPT | 5.1 | 3.0 | 10.3 | 0.34 | 0.23 | 0.47 |
| VCALT | 3.6 | 2.2 | 6.6 | 0.49 | 0.36 | 0.65 |
| SOPT/VCALT | 6.0 | 3.6 | 11.4 | 0.20 | 0.12 | 0.32 |
aThe likelihood ratio incorporates both the sensitivity and specificity of the test and provides a direct estimate of how much a test result will change the odds of having a disease.
