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Table 3 Patient characteristics at ICU admission, based on the presence of ventilator-associated events

From: Accuracy of ventilator-associated events for the diagnosis of ventilator-associated lower respiratory tract infections

 VAC, n = 227No VAC, n = 832pIVAC, n = 123No IVAC, n = 936ppVAP, n = 62No pVAP, n = 997p
Male gender164 (72.2)531 (63.8)0.02088 (71.5)607 (64,9)0.15044 (71)651 (65.3)0.372
Age, years59 (47–67)61 (47–70)0.22758 (46–67)61 (47–69.7)0.12155 (45–66)61 (47–70)0.006
SAPS II56 (46–74)59 (46–70)0.80458 (44–72)58 (46–70)0.35360 (47–73)58 (46–71)0.192
SOFA9 (7–12)9 (6–11)0.0419 (6–12)10 (6.25–11)0.0099 (7–13)9 (7–12)0.392
Reason for admission
 Medical vs surgical189 (83.3)693 (83.3)0.93394 (76.4)788 (84.2)0.02646 (74.2)836 (83,9)0.043
 Septic shock65 (28.6)200 (24)0.16232 (26)233 (24.9)0.79714 (22.6)251 (25.1)0.641
 Acute respiratory failure93 (41)282 (33,9)0.05143 (35)332 (35.5)0.89818 (29)357 (35.8)0.274
 Neurologic failure39 (17.2)171 (20.6)0.25221 (17.1)189 (20.2)0.40911 (17.7)199 (20)0.665
 Soft tissue infection23 (10.1)83 (10)0.95316 (13)90 (9.6)0.2428 (12.9)98 (9.8)0.437
 Cardiac arrest21 (9.3)98 (11.8)027813 (10.1)106 (11.3)0.7949 (14.5)110 (11.1)0.405
 Poisoning7 (3.1)40 (4.8)0.2614 (3.3)43 (4.6)0.3432 (3.2)45 (4.5)0.631
 Other44 (19.4)118 (14.2)0.05628 (22.8)134 (14.3)0.01512 (19.4)150 (15.1)0.364
Charlson comorbidity index3 (2–5)4 (1–5)0.4403 (1–5)4 (2–5)0.6393 (2–5)4 (1–5)0.024
Diabetes58 (25.6)182 (21.9)0.24833 (26.8)207 (22.2)0.24613 (21)227 (22.8)0.736
Chronic renal failure17 (7.5)88 (10.6)0.8999 (7.3)96 (10.3)0.3023 (4.8)102 (10.3)0.167
Chronic heart failure40 (17.6)150 (18.1)0.87522 (17.9)168 (18)0.97810 (16.1)180 (18.1)0.696
Chronic respiratory failure36 (15.9)120 (14.5)0.59819 (15.4)137 (14.7)0.81910 (16.1)146 (14.7)0.754
Cirrhosis23 (10.1)70 (8.4)0.43613 (10.6)80 (8.6)0.4706 (9.7)87 (8.7)0.809
Immunosuppression55 (24.2)236 (28.4)0.20933 (26.8)258 (27.6)0.85317 (27.4)274 (27.5)0.984
Obesity
 BMI > 3064 (28.2)153 (18.4)0.00135 (28.5)182 (19.5)0.0218 (29)199 (20)0.088
 BMI > 3530 (13.2)86 (10.3)0.22318 (14.6)98 (10.5)0.16710 (16.1)106 (10.6)0.181
  1. Data are numbers (%), or median (interquartile range)
  2. BMI, body mass index; SAPS: simplified acute physiology score; SOFA, sepsis-related organ failure assessment