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Estimated threshold for salivary IgG, true positive rate (TPR), false positive rate (FPR), positive predictive value (PPV) and negative predictive value (NPV) with ROC curve analysis with a functional antibody titer (rSBA) >=128 as correlate of protection
| Serogroup | Threshold (ng/mL) | TPR | FPR | PPV | NPV |
|---|---|---|---|---|---|
| MenC | 3.54 | 0.86 | 0.10 | 0.95 | 0.74 |
| MenW | 2.00 | 0.62 | 0.09 | 0.94 | 0.50 |
| MenY | 1.82 | 0.51 | 0.09 | 0.95 | 0.36 |
