Table 1—

Characteristics of the patients on the day of study inclusion at start of mechanical ventilation

VAPp-value
NonsuspectedNonconfirmedConfirmed
Subjects n24119
Age yrs63 (52–72)66 (53–73)61 (45–74)0.88
Males n16560.46
ICU stay days10 (5.5–16.5)16 (10–18.5)7 (6–14)0.38
Hospitalisation days11.5 (6.5–25)16 (10–25.5)7 (6–14)0.35
GCS prior to intubation6 (3–8)6 (3–7.5)4 (3–5)0.51
Previous antibiotics days0000.29
Presence SIRS19 (79)9 (82)9 (100)0.34
APACHE-II20 (16.5–24)18 (15.5–23)20 (18–24)0.28
APS14.5 (11.5–16.5)13 (11–19)18 (13–21)0.16
SOFA6 (5–8)6 (5.5–7.5)7 (6–7)0.86
CPIS3 (1.5–3)2 (1.5–4)2 (1–4)0.96
Temperature °C37.5 (36.3–37.9)37.0 (36.0–38.5)38.0 (36.0–38.5)0.86
Leukocytes 109 cells·L−111.1 (8.3–15.5)11.1 (7.6–13.5)14.5 (9.3–15.2)0.61
Pa,O2/FI,O2 mmHg298 (229–349)290 (255–382)274 (141–409)0.74
CRP mg·dL−13.9 (1.5–6.4)4.3 (1.2–6.4)3.1 (1.2–7.7)0.62
Procalcitonin ng·mL−10.15 (0.10–0.73)0.33 (0.17–1.90)0.46 (0.22–1.17)0.12
  • Data are presented as median (interquartile range) and n (%), unless otherwise stated. VAP: ventilator-associated pneumonia; ICU: intensive care unit; GCS: Glasgow Coma Score; SIRS: Systemic Inflammatory Response Syndrome; APACHE: Acute Physiology And Chronic Health Evaluation score; APS: Acute Physiology Score; SOFA: Sepsis-related Organ Failure Assessment; CPIS: Clinical Pulmonary Infection Score; Pa,O2/FI,O2: arterial oxygen tension / inspiratory oxygen fraction; CRP: C-reactive protein. 1 mmHg = 0.133 kPa.