Table 3 Sensitivity, Specificity, Predictive value, Likelihood ratio of Procalcitonin (> 0.5 ng/mL) for different diagnostic criteria of pneumonia
From: Role of procalcitonin in diagnosis of community acquired pneumonia in Children
| Â | Sensitivity | Specificity | Likelihood ratio positive | Likelihood ratio negative | Positive predictive value | Negative predictive value |
|---|---|---|---|---|---|---|
Pneumonia as per any CXR abnormalities | 29.7 (23.6, 36.4) | 87.5 (80.5, 92.7) | 2.4 (1.4, 3.9) | 0.8 (0.7, 0.9) | 79.5 (70.1, 86.5) | 43.2 (40.6, 45.9) |
Pneumonia as per presence of consolidation on CXR | 34.5 (22.5, 48.1) | 79.2 (73.9, 83.8) | 1.7 (1.1, 2.5) | 0.8 (0.7, 1.01) | 25.6 (18.4, 34.5) | 85.3 (82.7, 87.6) |
Pneumonia as per WHO criteria | 23.4(18.8, 28.5) | 82.8 (70.6, 91.4) | 1.4 (0.7, 2.5, 7.8) | 0.9 (0.8, 1.1) | 87.9 (80.5, 93) | 16.7 (14.9, 18.6) |