Table 1.
Baseline characteristics of patients at the time of sampling
| Variables | Results, mean±SD (range) |
|---|---|
| Age (years) | 55.27±16.88 (18-85) |
| Male: female ratio | 13:7 |
| Duration of ICU stay (days) | 10.21±5.67 (3-31) |
| Duration of mechanical ventilation (days) | 9.82±5.66 (3-30) |
| Duration of increased tracheal secretions (days) | 4.26±1.33 (2-8) |
| Duration of fever (days) | 5.02±2.45 (0-14) |
| Total leukocyte counts (mm−3) | 17,790±10,910 (1040-41,610) |
| pO2 (mmHg) | 121.10±33.05 (25.58-205) |
| pCO2 (mmHg) | 32.89±13.22 (4.9-61.24) |
| CPIS score | 5.88±1.90 (3-11) |
| Modified APACHE II | 20.30±7.06 (5-34) |
ICU=Intensive care unit, pO2=Partial pressure of oxygen, pCO2=Partial pressure of carbon-di-oxide, CPIS=Clinical pulmonary infection score, APACHE=Acute physiology and chronic health evaluation, SD=Standard deviation