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Sensitivities, specificities, and positive and negative predictive values of hyponatremia, leukocytosis, and their combination.
| Sensitivity | Specificity | Positive predictive value | Negative predictive value | |
|---|---|---|---|---|
| Hyponatremia (<139.5 mmol/L) | 70.4% | 72.4% | 12.8% | 97.2% |
| Leukocytosis (>9985/mm3) | 48.1% | 86.6% | 17.1% | 96.7% |
| Leukocytosis and hyponatremia | 29.6% | 91.5% | 16.7% | 95.8% |
| Leukocytosis or hyponatremia | 88.9% | 67.5% | 13.6% | 99.1% |
