Table 4 Comparison of serum procalcitonin level (at different cut-offs) between any abnormality in CXR and no abnormality
From: Role of procalcitonin in diagnosis of community acquired pneumonia in Children
| Â | Any abnormality on CXR | No CXR abnormality | p |
|---|---|---|---|
PCT level > 0.25 ng/ml | |||
  + ve | 79 (37.8) | 27 (21.1) | 0.001 |
 -ve | 130 (62.2) | 101 (78.9) | |
PCT level > 0.5 ng/ml | |||
  + ve | 62 (29.7) | 16 (12.5) |  < 0.001 |
 -ve | 147 (70.3) | 112 (87.5) | |
PCT level > 1 ng/ml | |||
  + ve | 49 (23.4) | 11 (8.6) | 0.001 |
 -ve | 160 (76.6) | 117 (91.4) | |
PCT level > 2 ng/ml | |||
  + ve | 36 (17.2) | 9 (7.0) | 0.008 |
 -ve | 173 (82.8) | 119 (93.0) | |
PCT level > 3 ng/ml | |||
  + ve | 31 (14.8) | 8 (6.2) | 0.01 |
 -ve | 178 (85.2) | 120 (93.8) | |