Table 1 Characteristics of patients with or without ventilator-associated pneumonia (VAP) within 9 days of ICU admission in University of Lyon hospitals (France), January 2001-December 2009
Characteristics | VAP within 9 days (n = 367) | No VAP within 9 days (n = 3,020) | p-value |
|---|---|---|---|
Categorical variable, n (%) | |||
Year of admission | < 0.001 | ||
2001-2003 | 95 (25.9) | 1,202 (39.8) | |
2004-2006 | 116 (31.6) | 937 (31.0) | |
2007-2009 | 156 (42.5) | 881 (29.2) | |
Gender, female | 109 (29.7) | 1,165 (38.6) | 0.001 |
Neutrophil count < 500/mm3 | 23 (6.3) | 189 (6.3) | 1.0 |
Trauma | 160 (43.6) | 754 (25.0) | < 0.001 |
Diagnosis category | < 0.001 | ||
Medical | 152 (41.5) | 1,844 (61.1) | |
Surgical | 214 (58.5) | 1,176 (38.9) | |
Deceased in-hospital | 75 (20.5) | 656 (21.8) | 0.6 |
Continuous variable, median (interquartile range) | |||
Age, years | 51 (36-66) | 55 (40-69) | 0.002 |
Simplified Acute Physiology Score | 47 (36-56) | 44 (32-56) | 0.011 |
Length of hospital stay, days | 21 (12-33) | 5 (3-12) | < 0.001 |
Length of intubation, days | 15 (9-25) | 2 (1-8) | < 0.001 |