Skip to main content

Advertisement

Table 1 Patient demographics

From: The utility of endotracheal aspirate bacteriology in identifying mechanically ventilated patients at risk for ventilator associated pneumonia: a single-center prospective observational study

Baseline variables* All population (n = 240) MICU (n = 138) SICU (n = 102) p value
Age, yr 63.9 ± 14.8 62.5 ± 14.7 65.9 ± 14.7 0.0752
BMI 30.2 ± 9.5 30.1 ± 9.3 30.4 ± 9.7 0.7875
Hospital LoS 19.6 ± 13.3 16.5 ± 10.4 23.8 ± 15.4 < 0.0001
Duration of MV 9.1** ± 5.1 8.5 ± 5.1 9.8** ± 5.1 0.0482
Male, % (n) 58.8 (141) 58.0 (80) 59.8 (61) 0.7923
All-cause mortality, % (n) 31.3 (75) 39.9 (55) 19.6 (20) 0.0062
SICU, % (n) 42.5 (102) N/A N /A N/A
Emergency surgery, % (n) 30.4 (73) 8.0 (11) 60.8 (62) < 0.0001
Trauma, % (n) 9.2 (22) 2.9 (4) 17.6 (18) 0.0001
Hypertension, % (n) 50.4 (121) 48.6 (67) 52.9 (54) 0.5165
Diabetes, % (n) 27.5 (66) 29.0 (40) 25.5 (26) 0.5627
Asthma, % (n) 7.5 (18) 8.0 (11) 6.9 (7) 0.8088
COPD, % (n) 17.1 (41) 16.7 (23) 17.6 (18) 0.8636
Chronic heart failure, % (n) 16.3 (39) 19.6 (27) 11.8 (12) 0.1146
Malignancy, % (n) 23.8 (57) 21.0 (29) 27.5 (28) 0.2837
Previous smoker, % (n) 26.7 (64) 26.1 (36) 27.5 (28) 0.8829
Current smoker, % (n) 18.3 (44) 21.7 (30) 13.7 (14) 0.1303
Alcohol abuse, % (n) 23.3 (56) 25.4 (35) 20.6 (21) 0.4416
Antibiotics in the last 90 days, % (n) 43.3 (104) 34.1 (47) 46.1 (47) 0.1774
Antibiotics upon admission, % (n) 15.0 (36) 15.9 (22) 13.7 (14) 0.7161
Immunoactive drugs***, % (n) 22.1 (53) 24.6 (34) 18.6 (19) 0.3450
Admission due to sepsis, % (n) 17.1 (41) 19.6 (27) 13.7 (14) 0.2982
Admission due to respiratory failure or hypoxia, % (n) 27.9 (67) 44.2 (61) 5.9 (6) < 0.0001
VAP, % (n) 35.4 (85) 31.9 (44) 40.2 (41) 0.2193
S. aureus VAP, % (n) 7.5 (18) 5.8 (8) 9.8 (10) 1.000
Gram-negative VAP, % (n) 7.5 (18) 6.5 (9) 8.8 (9) 0.6215
  1. *Results are presented as mean ± standard deviation for numerical, and as percentage with an absolute count (n) for categorical variables. For comparison of MICU and SICU groups, p-values were determined by unpaired two-tailed t-test for numerical data and two-tailed Fisher’s exact test for categorical data. N/A = not applicable. **1 patient excluded since MV start date was not recorded. ***Including corticosteroids and chemotherapy; upon admission and/or in the last 90 days