Biochemical and bacteriological variables in pleural fluid
| Minimum | P25 | Median | P75 | Maximum | p-valve | |
| pH | ||||||
| Complicated | 5.5 | 6.53 | 6.70 | 7.07 | 7.39 | |
| Noncomplicated | 7.30 | 7.37 | 7.43 | 7.50 | 7.61 | <0.001 |
| Glucose mg·dL−1 | ||||||
| Complicated | 1 | 5 | 36.5 | 65 | 147 | |
| Noncomplicated | 57 | 97 | 127 | 135 | 374 | <0.001 |
| Protein g·dL−1 | ||||||
| Complicated | 3 | 3.3 | 4.4 | 5.6 | 7.3 | |
| Noncomplicated | 3 | 3.2 | 3.8 | 4.7 | 6 | 0.026 |
| LDH IU·L−1 | ||||||
| Complicated | 159 | 1.37 | 8.22 | 6.91 | 50.0 | |
| Noncomplicated | 153 | 323 | 539 | 708 | 1.74 | <0.001 |
| Myeloperoxidase µg·L−1 | ||||||
| Complicated | 745 | 15.0 | 99.0 | 5.50 | 625 | |
| Noncomplicted | 21 | 226 | 1.70 | 1.94 | 12.2 | <0.001 |
| Neutrophils 103·µL−1 | ||||||
| Complicated | 4.05 | 7.82 | 65.8 | 90.0 | 725 | |
| Noncomplicated | 4.02 | 4.13 | 3.00 | 6.78 | 14.2 | <0.001 |
Complicated: complicated paraneumonic pleural fluid n=36
Noncomplicated: noncomplicated paraneumonic pleural fluid n=34
LDH: lactate dehydrogenase
P25: 25th percentile
P75: 75th percentile