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Table 1 Baseline characteristics of 71 patients who developed ventilator-associated pneumonia

From: Copeptin, a novel prognostic biomarker in ventilator-associated pneumonia

Parameter Survivors (n = 45) Nonsurvivors (n = 26) Total (n = 71) P value
Age (years) 58 ± 14 64 ± 16 60 ± 15 0.12
Acute Physiology and Chronic Health Evaluation II score 18 ± 6 22 ± 9 19 ± 7 0.06
Albumin level (mg/dl) 2.8 ± 0.6 2.4 ± 0.5 2.7 ± 0.6 0.01
Gender (%)     0.09
   Male 66.7 46.2 59.2  
   Female 33.3 53.8 40.8  
Origin (%)     0.25
   Medical 51.1 65.4 56.3  
   Surgical 48.9 34.6 43.7  
Onset (%)a     0.93
   Early onset 22.2 23.1 22.5  
   Late onset 77.8 76.9 77.5  
Chronic obstructive pulmonary disease (%) 17.7 26.9 19.7 0.59
Congestive heart failure (%) 17.8 26.9 21.1 0.37
Malignancy (%) 13.3 15.4 14.1 0.81
Histamine type-2 receptor antagonist (%) 66.7 57.7 63.4 0.45
Proton pump inhibitor (%) 22.2 34.6 26.8 0.26
Corticosteroids (%) 13.3 19.2 15.5 0.51
Dialysis (%) 11.1 19.2 14.1 0.35
Smoker (%) 37.8 38.5 38.0 0.95
Septic status (%)     0.01
   Sepsis 66.7 15.4 47.9  
   Severe sepsis 28.9 30.8 29.6  
   Septic shock 4.4 53,8 22.5  
  1. Data presented as the mean ± standard deviation or the percentage. aEarly onset is defined as occurring during the first 4 days of mechanical ventilation, and late onset as occurring 5 days or more after mechanical ventilation.