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Sensitivity, Specificity, Positive Predictive Value and Negative Predictive Value of Procalcitonin combined with each of the three scores
| Severity Tool | Mortality | |||
|---|---|---|---|---|
| Sensitivity | Specificity | PPV | NPV | |
| PCT ≥ 2 ng/ml + PSI(IV+V) | 100 | 59.18 | 23.07 | 100 |
| PCT ≥ 2 ng/ml + CURB-65 ≥ 3 | 100 | 69.38 | 28.57 | 100 |
| PCT ≥ 2 ng/ml + CRB-65 ≥ 3 | 100 | 73.47 | 31.58 | 100 |
